1
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549



                                  Schedule 13G



                    Under the Securities Exchange Act of 1934
                              (Amendment No. 4 )
                                            ---

                       The BlackRock 2001 Term Trust Inc.
 ------------------------------------------------------------------------------
                                (Name of Issuer)

                     Common Stock, par value $.01 per share
   --------------------------------------------------------------------------
                         (Title of Class of Securities)


                                    092477108
                    -----------------------------------------
                                 (CUSIP Number)

                                  June 29, 2001
                             -----------------------
             (Date of Event which requires filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

         [ ]      Rule 13d-1(b)
         [X]      Rule 13d-1(c)
         [ ]      Rule 13d-1(d)

        *The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which would
alter the disclosures provided in a prior cover page.

        The information required in the remainder of this cover page shall not
be deemed to be "filed" for the purpose of Section 18 of the Securities
Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that
section of the Act but shall be subject to all other provisions of the Act
(however, see the Notes).




                          (Continued on following page(s))

                               Page 1 of 26 Pages



   2



 CUSIP NO. 092477108                               13G                                 PAGE 2 OF 26 PAGES
     

-----------------------------------------------------------------------------------------------------------
|   1 | NAME OF REPORTING PERSON                                                                          |
|     | S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON                                                 |
|     |      The Progressive Corporation                                                                  |
|     |      34-0963169                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                       (a) [   ] |
|     |                                                                                             ----- |
|     |                                                                                         (b) [ X ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|   3 | SEC USE ONLY                                                                                      |
|     |                                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   4 | CITIZENSHIP OR PLACE OF ORGANIZATION                                                              |
|     |                                                                                                   |
|     |      Ohio                                                                                         |
|-------------------------------|-------|-----------------------------------------------------------------|
|            NUMBER OF          |     5 |  SOLE VOTING POWER                                              |
|                               |       |                                                                 |
|             SHARES            |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|          BENEFICIALLY         |     6 |  SHARED VOTING POWER                                            |
|                               |       |                                                                 |
|            OWNED BY           |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|              EACH             |     7 |  SOLE DISPOSITIVE POWER                                         |
|                               |       |                                                                 |
|            REPORTING          |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|           PERSON WITH         |     8 |  SHARED DISPOSITIVE POWER                                       |
|                               |       |                                                                 |
|                               |       |    -0-                                                          |
|-------------------------------|-------|-----------------------------------------------------------------|
|   9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON                                      |
|     |                                                                                                   |
|     |   -0-                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES                              |
|     |                                                                                             [   ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|  11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9                                                   |
|     |                                                                                                   |
|     |    0%                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  12 | TYPE OF REPORTING PERSON*                                                                         |
|     |                                                                                                   |
|     |    HC, CO                                                                                         |
-----------------------------------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


   3



 CUSIP NO. 092477108                               13G                                 PAGE 3 OF 26 PAGES
     

-----------------------------------------------------------------------------------------------------------
|   1 | NAME OF REPORTING PERSON                                                                          |
|     | S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON                                                 |
|     |      Halcyon Insurance Company                                                                    |
|     |      34-1524319                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                       (a) [   ] |
|     |                                                                                             ----- |
|     |                                                                                         (b) [ X ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|   3 | SEC USE ONLY                                                                                      |
|     |                                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   4 | CITIZENSHIP OR PLACE OF ORGANIZATION                                                              |
|     |                                                                                                   |
|     |      Ohio                                                                                         |
|-------------------------------|-------|-----------------------------------------------------------------|
|            NUMBER OF          |     5 |  SOLE VOTING POWER                                              |
|                               |       |                                                                 |
|             SHARES            |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|          BENEFICIALLY         |     6 |  SHARED VOTING POWER                                            |
|                               |       |                                                                 |
|            OWNED BY           |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|              EACH             |     7 |  SOLE DISPOSITIVE POWER                                         |
|                               |       |                                                                 |
|            REPORTING          |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|           PERSON WITH         |     8 |  SHARED DISPOSITIVE POWER                                       |
|                               |       |                                                                 |
|                               |       |    -0-                                                          |
|-------------------------------|-------|-----------------------------------------------------------------|
|   9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON                                      |
|     |                                                                                                   |
|     |   -0-                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES                              |
|     |                                                                                             [   ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|  11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9                                                   |
|     |                                                                                                   |
|     |    0%                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  12 | TYPE OF REPORTING PERSON*                                                                         |
|     |                                                                                                   |
|     |    IC, CO                                                                                         |
-----------------------------------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


   4



 CUSIP NO. 092477108                               13G                                 PAGE 4 OF 26 PAGES
     

-----------------------------------------------------------------------------------------------------------
|   1 | NAME OF REPORTING PERSON                                                                          |
|     | S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON                                                 |
|     |      Progressive Home Insurance Company (f/k/a Midland Risk Insurance Company)                    |
|     |      62-0484104                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                       (a) [   ] |
|     |                                                                                             ----- |
|     |                                                                                         (b) [ X ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|   3 | SEC USE ONLY                                                                                      |
|     |                                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   4 | CITIZENSHIP OR PLACE OF ORGANIZATION                                                              |
|     |                                                                                                   |
|     |      Tennessee                                                                                    |
|-------------------------------|-------|-----------------------------------------------------------------|
|            NUMBER OF          |     5 |  SOLE VOTING POWER                                              |
|                               |       |                                                                 |
|             SHARES            |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|          BENEFICIALLY         |     6 |  SHARED VOTING POWER                                            |
|                               |       |                                                                 |
|            OWNED BY           |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|              EACH             |     7 |  SOLE DISPOSITIVE POWER                                         |
|                               |       |                                                                 |
|            REPORTING          |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|           PERSON WITH         |     8 |  SHARED DISPOSITIVE POWER                                       |
|                               |       |                                                                 |
|                               |       |    -0-                                                          |
|-------------------------------|-------|-----------------------------------------------------------------|
|   9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON                                      |
|     |                                                                                                   |
|     |   -0-                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES                              |
|     |                                                                                             [   ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|  11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9                                                   |
|     |                                                                                                   |
|     |    0%                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  12 | TYPE OF REPORTING PERSON*                                                                         |
|     |                                                                                                   |
|     |    IC, CO, HC                                                                                     |
-----------------------------------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


   5



 CUSIP NO. 092477108                               13G                                 PAGE 5 OF 26 PAGES
     

-----------------------------------------------------------------------------------------------------------
|   1 | NAME OF REPORTING PERSON                                                                          |
|     | S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON                                                 |
|     |      PC Investment Company                                                                        |
|     |      34-1576555                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                       (a) [   ] |
|     |                                                                                             ----- |
|     |                                                                                         (b) [ X ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|   3 | SEC USE ONLY                                                                                      |
|     |                                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   4 | CITIZENSHIP OR PLACE OF ORGANIZATION                                                              |
|     |                                                                                                   |
|     |      Delaware                                                                                     |
|-------------------------------|-------|-----------------------------------------------------------------|
|            NUMBER OF          |     5 |  SOLE VOTING POWER                                              |
|                               |       |                                                                 |
|             SHARES            |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|          BENEFICIALLY         |     6 |  SHARED VOTING POWER                                            |
|                               |       |                                                                 |
|            OWNED BY           |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|              EACH             |     7 |  SOLE DISPOSITIVE POWER                                         |
|                               |       |                                                                 |
|            REPORTING          |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|           PERSON WITH         |     8 |  SHARED DISPOSITIVE POWER                                       |
|                               |       |                                                                 |
|                               |       |    -0-                                                          |
|-------------------------------|-------|-----------------------------------------------------------------|
|   9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON                                      |
|     |                                                                                                   |
|     |   -0-                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES                              |
|     |                                                                                             [   ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|  11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9                                                   |
|     |                                                                                                   |
|     |    0%                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  12 | TYPE OF REPORTING PERSON*                                                                         |
|     |                                                                                                   |
|     |    CO, a wholly-owned subsidiary of Progressive Casualty Insurance Company                        |
-----------------------------------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


   6



 CUSIP NO. 092477108                               13G                                 PAGE 6 OF 26 PAGES
     

-----------------------------------------------------------------------------------------------------------
|   1 | NAME OF REPORTING PERSON                                                                          |
|     | S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON                                                 |
|     |      Progressive Investment Company, Inc.                                                         |
|     |      34-1378861                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                       (a) [   ] |
|     |                                                                                             ----- |
|     |                                                                                         (b) [ X ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|   3 | SEC USE ONLY                                                                                      |
|     |                                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   4 | CITIZENSHIP OR PLACE OF ORGANIZATION                                                              |
|     |                                                                                                   |
|     |      Delaware                                                                                     |
|-------------------------------|-------|-----------------------------------------------------------------|
|            NUMBER OF          |     5 |  SOLE VOTING POWER                                              |
|                               |       |                                                                 |
|             SHARES            |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|          BENEFICIALLY         |     6 |  SHARED VOTING POWER                                            |
|                               |       |                                                                 |
|            OWNED BY           |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|              EACH             |     7 |  SOLE DISPOSITIVE POWER                                         |
|                               |       |                                                                 |
|            REPORTING          |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|           PERSON WITH         |     8 |  SHARED DISPOSITIVE POWER                                       |
|                               |       |                                                                 |
|                               |       |    -0-                                                          |
|-------------------------------|-------|-----------------------------------------------------------------|
|   9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON                                      |
|     |                                                                                                   |
|     |   -0-                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES                              |
|     |                                                                                             [   ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|  11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9                                                   |
|     |                                                                                                   |
|     |    0%                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  12 | TYPE OF REPORTING PERSON*                                                                         |
|     |                                                                                                   |
|     |    CO                                                                                             |
-----------------------------------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


   7



 CUSIP NO. 092477108                               13G                                 PAGE 7 OF 26 PAGES
     

-----------------------------------------------------------------------------------------------------------
|   1 | NAME OF REPORTING PERSON                                                                          |
|     | S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON                                                 |
|     |      Progressive Casualty Insurance Company                                                       |
|     |      34-6513736                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                       (a) [   ] |
|     |                                                                                             ----- |
|     |                                                                                         (b) [ X ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|   3 | SEC USE ONLY                                                                                      |
|     |                                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   4 | CITIZENSHIP OR PLACE OF ORGANIZATION                                                              |
|     |                                                                                                   |
|     |      Ohio                                                                                         |
|-------------------------------|-------|-----------------------------------------------------------------|
|            NUMBER OF          |     5 |  SOLE VOTING POWER                                              |
|                               |       |                                                                 |
|             SHARES            |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|          BENEFICIALLY         |     6 |  SHARED VOTING POWER                                            |
|                               |       |                                                                 |
|            OWNED BY           |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|              EACH             |     7 |  SOLE DISPOSITIVE POWER                                         |
|                               |       |                                                                 |
|            REPORTING          |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|           PERSON WITH         |     8 |  SHARED DISPOSITIVE POWER                                       |
|                               |       |                                                                 |
|                               |       |    -0-                                                          |
|-------------------------------|-------|-----------------------------------------------------------------|
|   9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON                                      |
|     |                                                                                                   |
|     |   -0-                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES                              |
|     |                                                                                             [   ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|  11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9                                                   |
|     |                                                                                                   |
|     |    0%                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  12 | TYPE OF REPORTING PERSON*                                                                         |
|     |                                                                                                   |
|     |    IC, HC, CO                                                                                     |
-----------------------------------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


   8



 CUSIP NO. 092477108                               13G                                 PAGE 8 OF 26 PAGES
     

-----------------------------------------------------------------------------------------------------------
|   1 | NAME OF REPORTING PERSON                                                                          |
|     | S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON                                                 |
|     |      Progressive American Insurance Company                                                       |
|     |      34-1094197                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                       (a) [   ] |
|     |                                                                                             ----- |
|     |                                                                                         (b) [ X ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|   3 | SEC USE ONLY                                                                                      |
|     |                                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   4 | CITIZENSHIP OR PLACE OF ORGANIZATION                                                              |
|     |                                                                                                   |
|     |      Florida                                                                                      |
|-------------------------------|-------|-----------------------------------------------------------------|
|            NUMBER OF          |     5 |  SOLE VOTING POWER                                              |
|                               |       |                                                                 |
|             SHARES            |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|          BENEFICIALLY         |     6 |  SHARED VOTING POWER                                            |
|                               |       |                                                                 |
|            OWNED BY           |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|              EACH             |     7 |  SOLE DISPOSITIVE POWER                                         |
|                               |       |                                                                 |
|            REPORTING          |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|           PERSON WITH         |     8 |  SHARED DISPOSITIVE POWER                                       |
|                               |       |                                                                 |
|                               |       |    -0-                                                          |
|-------------------------------|-------|-----------------------------------------------------------------|
|   9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON                                      |
|     |                                                                                                   |
|     |   -0-                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES                              |
|     |                                                                                             [   ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|  11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9                                                   |
|     |                                                                                                   |
|     |    0%                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  12 | TYPE OF REPORTING PERSON*                                                                         |
|     |                                                                                                   |
|     |    IC, CO                                                                                         |
-----------------------------------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


   9



 CUSIP NO. 092477108                               13G                                 PAGE 9 OF 26 PAGES
     

-----------------------------------------------------------------------------------------------------------
|   1 | NAME OF REPORTING PERSON                                                                          |
|     | S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON                                                 |
|     |      Progressive Bayside Insurance Company                                                        |
|     |      31-1193845                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                       (a) [   ] |
|     |                                                                                             ----- |
|     |                                                                                         (b) [ X ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|   3 | SEC USE ONLY                                                                                      |
|     |                                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   4 | CITIZENSHIP OR PLACE OF ORGANIZATION                                                              |
|     |                                                                                                   |
|     |      Florida                                                                                      |
|-------------------------------|-------|-----------------------------------------------------------------|
|            NUMBER OF          |     5 |  SOLE VOTING POWER                                              |
|                               |       |                                                                 |
|             SHARES            |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|          BENEFICIALLY         |     6 |  SHARED VOTING POWER                                            |
|                               |       |                                                                 |
|            OWNED BY           |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|              EACH             |     7 |  SOLE DISPOSITIVE POWER                                         |
|                               |       |                                                                 |
|            REPORTING          |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|           PERSON WITH         |     8 |  SHARED DISPOSITIVE POWER                                       |
|                               |       |                                                                 |
|                               |       |    -0-                                                          |
|-------------------------------|-------|-----------------------------------------------------------------|
|   9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON                                      |
|     |                                                                                                   |
|     |   -0-                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES                              |
|     |                                                                                             [   ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|  11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9                                                   |
|     |                                                                                                   |
|     |    0%                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  12 | TYPE OF REPORTING PERSON*                                                                         |
|     |                                                                                                   |
|     |    IC, CO                                                                                         |
-----------------------------------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


   10



 CUSIP NO. 092477108                               13G                                 PAGE 10 OF 26 PAGES
     

-----------------------------------------------------------------------------------------------------------
|   1 | NAME OF REPORTING PERSON                                                                          |
|     | S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON                                                 |
|     |      Progressive Classic Insurance Company                                                        |
|     |      39-1453002                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                       (a) [   ] |
|     |                                                                                             ----- |
|     |                                                                                         (b) [ X ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|   3 | SEC USE ONLY                                                                                      |
|     |                                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   4 | CITIZENSHIP OR PLACE OF ORGANIZATION                                                              |
|     |                                                                                                   |
|     |      Wisconsin                                                                                    |
|-------------------------------|-------|-----------------------------------------------------------------|
|            NUMBER OF          |     5 |  SOLE VOTING POWER                                              |
|                               |       |                                                                 |
|             SHARES            |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|          BENEFICIALLY         |     6 |  SHARED VOTING POWER                                            |
|                               |       |                                                                 |
|            OWNED BY           |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|              EACH             |     7 |  SOLE DISPOSITIVE POWER                                         |
|                               |       |                                                                 |
|            REPORTING          |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|           PERSON WITH         |     8 |  SHARED DISPOSITIVE POWER                                       |
|                               |       |                                                                 |
|                               |       |    -0-                                                          |
|-------------------------------|-------|-----------------------------------------------------------------|
|   9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON                                      |
|     |                                                                                                   |
|     |   -0-                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES                              |
|     |                                                                                             [   ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|  11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9                                                   |
|     |                                                                                                   |
|     |    0%                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  12 | TYPE OF REPORTING PERSON*                                                                         |
|     |                                                                                                   |
|     |    IC, CO                                                                                         |
-----------------------------------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


   11



 CUSIP NO. 092477108                               13G                                 PAGE 11 OF 26 PAGES
     

-----------------------------------------------------------------------------------------------------------
|   1 | NAME OF REPORTING PERSON                                                                          |
|     | S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON                                                 |
|     |      Progressive Mountain Insurance Company                                                       |
|     |      93-0935623                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                       (a) [   ] |
|     |                                                                                             ----- |
|     |                                                                                         (b) [ X ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|   3 | SEC USE ONLY                                                                                      |
|     |                                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   4 | CITIZENSHIP OR PLACE OF ORGANIZATION                                                              |
|     |                                                                                                   |
|     |      Colorado                                                                                     |
|-------------------------------|-------|-----------------------------------------------------------------|
|            NUMBER OF          |     5 |  SOLE VOTING POWER                                              |
|                               |       |                                                                 |
|             SHARES            |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|          BENEFICIALLY         |     6 |  SHARED VOTING POWER                                            |
|                               |       |                                                                 |
|            OWNED BY           |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|              EACH             |     7 |  SOLE DISPOSITIVE POWER                                         |
|                               |       |                                                                 |
|            REPORTING          |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|           PERSON WITH         |     8 |  SHARED DISPOSITIVE POWER                                       |
|                               |       |                                                                 |
|                               |       |    -0-                                                          |
|-------------------------------|-------|-----------------------------------------------------------------|
|   9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON                                      |
|     |                                                                                                   |
|     |   -0-                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES                              |
|     |                                                                                             [   ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|  11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9                                                   |
|     |                                                                                                   |
|     |    0%                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  12 | TYPE OF REPORTING PERSON*                                                                         |
|     |                                                                                                   |
|     |    IC, CO                                                                                         |
-----------------------------------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


   12



 CUSIP NO. 092477108                               13G                                 PAGE 12 OF 26 PAGES
     

-----------------------------------------------------------------------------------------------------------
|   1 | NAME OF REPORTING PERSON                                                                          |
|     | S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON                                                 |
|     |      Progressive Northern Insurance Company                                                       |
|     |      34-1318335                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                       (a) [   ] |
|     |                                                                                             ----- |
|     |                                                                                         (b) [ X ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|   3 | SEC USE ONLY                                                                                      |
|     |                                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   4 | CITIZENSHIP OR PLACE OF ORGANIZATION                                                              |
|     |                                                                                                   |
|     |      Wisconsin                                                                                    |
|-------------------------------|-------|-----------------------------------------------------------------|
|            NUMBER OF          |     5 |  SOLE VOTING POWER                                              |
|                               |       |                                                                 |
|             SHARES            |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|          BENEFICIALLY         |     6 |  SHARED VOTING POWER                                            |
|                               |       |                                                                 |
|            OWNED BY           |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|              EACH             |     7 |  SOLE DISPOSITIVE POWER                                         |
|                               |       |                                                                 |
|            REPORTING          |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|           PERSON WITH         |     8 |  SHARED DISPOSITIVE POWER                                       |
|                               |       |                                                                 |
|                               |       |    -0-                                                          |
|-------------------------------|-------|-----------------------------------------------------------------|
|   9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON                                      |
|     |                                                                                                   |
|     |   -0-                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES                              |
|     |                                                                                             [   ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|  11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9                                                   |
|     |                                                                                                   |
|     |    0%                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  12 | TYPE OF REPORTING PERSON*                                                                         |
|     |                                                                                                   |
|     |    IN, HC, CO                                                                                     |
-----------------------------------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


   13



 CUSIP NO. 092477108                               13G                                 PAGE 13 OF 26 PAGES
     

-----------------------------------------------------------------------------------------------------------
|   1 | NAME OF REPORTING PERSON                                                                          |
|     | S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON                                                 |
|     |      Progressive Northwestern Insurance Company                                                   |
|     |      91-1187829                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                       (a) [   ] |
|     |                                                                                             ----- |
|     |                                                                                         (b) [ X ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|   3 | SEC USE ONLY                                                                                      |
|     |                                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   4 | CITIZENSHIP OR PLACE OF ORGANIZATION                                                              |
|     |                                                                                                   |
|     |      Washington                                                                                   |
|-------------------------------|-------|-----------------------------------------------------------------|
|            NUMBER OF          |     5 |  SOLE VOTING POWER                                              |
|                               |       |                                                                 |
|             SHARES            |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|          BENEFICIALLY         |     6 |  SHARED VOTING POWER                                            |
|                               |       |                                                                 |
|            OWNED BY           |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|              EACH             |     7 |  SOLE DISPOSITIVE POWER                                         |
|                               |       |                                                                 |
|            REPORTING          |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|           PERSON WITH         |     8 |  SHARED DISPOSITIVE POWER                                       |
|                               |       |                                                                 |
|                               |       |    -0-                                                          |
|-------------------------------|-------|-----------------------------------------------------------------|
|   9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON                                      |
|     |                                                                                                   |
|     |   -0-                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES                              |
|     |                                                                                             [   ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|  11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9                                                   |
|     |                                                                                                   |
|     |    0%                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  12 | TYPE OF REPORTING PERSON*                                                                         |
|     |                                                                                                   |
|     |    IC, CO                                                                                         |
-----------------------------------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


   14



 CUSIP NO. 092477108                               13G                                 PAGE 14 OF 26 PAGES
     

-----------------------------------------------------------------------------------------------------------
|   1 | NAME OF REPORTING PERSON                                                                          |
|     | S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON                                                 |
|     |      Progressive Preferred Insurance Company                                                      |
|     |      34-1287020                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                       (a) [   ] |
|     |                                                                                             ----- |
|     |                                                                                         (b) [ X ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|   3 | SEC USE ONLY                                                                                      |
|     |                                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   4 | CITIZENSHIP OR PLACE OF ORGANIZATION                                                              |
|     |                                                                                                   |
|     |      Ohio                                                                                         |
|-------------------------------|-------|-----------------------------------------------------------------|
|            NUMBER OF          |     5 |  SOLE VOTING POWER                                              |
|                               |       |                                                                 |
|             SHARES            |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|          BENEFICIALLY         |     6 |  SHARED VOTING POWER                                            |
|                               |       |                                                                 |
|            OWNED BY           |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|              EACH             |     7 |  SOLE DISPOSITIVE POWER                                         |
|                               |       |                                                                 |
|            REPORTING          |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|           PERSON WITH         |     8 |  SHARED DISPOSITIVE POWER                                       |
|                               |       |                                                                 |
|                               |       |    -0-                                                          |
|-------------------------------|-------|-----------------------------------------------------------------|
|   9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON                                      |
|     |                                                                                                   |
|     |   -0-                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES                              |
|     |                                                                                             [   ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|  11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9                                                   |
|     |                                                                                                   |
|     |    0%                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  12 | TYPE OF REPORTING PERSON*                                                                         |
|     |                                                                                                   |
|     |    IC, CO                                                                                         |
-----------------------------------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


   15



 CUSIP NO. 092477108                               13G                                 PAGE 15 OF 26 PAGES
     

-----------------------------------------------------------------------------------------------------------
|   1 | NAME OF REPORTING PERSON                                                                          |
|     | S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON                                                 |
|     |      Progressive Premier Insurance Company of Illinois                                            |
|     |      36-3789786                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                       (a) [   ] |
|     |                                                                                             ----- |
|     |                                                                                         (b) [ X ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|   3 | SEC USE ONLY                                                                                      |
|     |                                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   4 | CITIZENSHIP OR PLACE OF ORGANIZATION                                                              |
|     |                                                                                                   |
|     |      Illinois                                                                                     |
|-------------------------------|-------|-----------------------------------------------------------------|
|            NUMBER OF          |     5 |  SOLE VOTING POWER                                              |
|                               |       |                                                                 |
|             SHARES            |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|          BENEFICIALLY         |     6 |  SHARED VOTING POWER                                            |
|                               |       |                                                                 |
|            OWNED BY           |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|              EACH             |     7 |  SOLE DISPOSITIVE POWER                                         |
|                               |       |                                                                 |
|            REPORTING          |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|           PERSON WITH         |     8 |  SHARED DISPOSITIVE POWER                                       |
|                               |       |                                                                 |
|                               |       |    -0-                                                          |
|-------------------------------|-------|-----------------------------------------------------------------|
|   9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON                                      |
|     |                                                                                                   |
|     |   -0-                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES                              |
|     |                                                                                             [   ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|  11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9                                                   |
|     |                                                                                                   |
|     |    0%                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  12 | TYPE OF REPORTING PERSON*                                                                         |
|     |                                                                                                   |
|     |    IC, CO                                                                                         |
-----------------------------------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


   16



 CUSIP NO. 092477108                               13G                                 PAGE 16 OF 26 PAGES
     

-----------------------------------------------------------------------------------------------------------
|   1 | NAME OF REPORTING PERSON                                                                          |
|     | S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON                                                 |
|     |      Progressive Southeastern Insurance Company                                                   |
|     |      59-1951700                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                       (a) [   ] |
|     |                                                                                             ----- |
|     |                                                                                         (b) [ X ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|   3 | SEC USE ONLY                                                                                      |
|     |                                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   4 | CITIZENSHIP OR PLACE OF ORGANIZATION                                                              |
|     |                                                                                                   |
|     |      Florida                                                                                      |
|-------------------------------|-------|-----------------------------------------------------------------|
|            NUMBER OF          |     5 |  SOLE VOTING POWER                                              |
|                               |       |                                                                 |
|             SHARES            |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|          BENEFICIALLY         |     6 |  SHARED VOTING POWER                                            |
|                               |       |                                                                 |
|            OWNED BY           |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|              EACH             |     7 |  SOLE DISPOSITIVE POWER                                         |
|                               |       |                                                                 |
|            REPORTING          |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|           PERSON WITH         |     8 |  SHARED DISPOSITIVE POWER                                       |
|                               |       |                                                                 |
|                               |       |    -0-                                                          |
|-------------------------------|-------|-----------------------------------------------------------------|
|   9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON                                      |
|     |                                                                                                   |
|     |   -0-                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES                              |
|     |                                                                                             [   ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|  11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9                                                   |
|     |                                                                                                   |
|     |    0%                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  12 | TYPE OF REPORTING PERSON*                                                                         |
|     |                                                                                                   |
|     |    IC, CO                                                                                         |
-----------------------------------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


   17



 CUSIP NO. 092477108                               13G                                 PAGE 17 OF 26 PAGES
     

-----------------------------------------------------------------------------------------------------------
|   1 | NAME OF REPORTING PERSON                                                                          |
|     | S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON                                                 |
|     |      Progressive Specialty Insurance Company                                                      |
|     |      34-1172685                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                       (a) [   ] |
|     |                                                                                             ----- |
|     |                                                                                         (b) [ X ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|   3 | SEC USE ONLY                                                                                      |
|     |                                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   4 | CITIZENSHIP OR PLACE OF ORGANIZATION                                                              |
|     |                                                                                                   |
|     |      Ohio                                                                                         |
|-------------------------------|-------|-----------------------------------------------------------------|
|            NUMBER OF          |     5 |  SOLE VOTING POWER                                              |
|                               |       |                                                                 |
|             SHARES            |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|          BENEFICIALLY         |     6 |  SHARED VOTING POWER                                            |
|                               |       |                                                                 |
|            OWNED BY           |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|              EACH             |     7 |  SOLE DISPOSITIVE POWER                                         |
|                               |       |                                                                 |
|            REPORTING          |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|           PERSON WITH         |     8 |  SHARED DISPOSITIVE POWER                                       |
|                               |       |                                                                 |
|                               |       |    -0-                                                          |
|-------------------------------|-------|-----------------------------------------------------------------|
|   9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON                                      |
|     |                                                                                                   |
|     |   -0-                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES                              |
|     |                                                                                             [   ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|  11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9                                                   |
|     |                                                                                                   |
|     |    0%                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  12 | TYPE OF REPORTING PERSON*                                                                         |
|     |                                                                                                   |
|     |    IC, CO                                                                                         |
-----------------------------------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


   18



 CUSIP NO. 092477108                               13G                                 PAGE 18 OF 26 PAGES
     

-----------------------------------------------------------------------------------------------------------
|   1 | NAME OF REPORTING PERSON                                                                          |
|     | S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON                                                 |
|     |      Specialty Risk Insurance Company                                                             |
|     |      62-1444848                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                       (a) [   ] |
|     |                                                                                             ----- |
|     |                                                                                         (b) [ X ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|   3 | SEC USE ONLY                                                                                      |
|     |                                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   4 | CITIZENSHIP OR PLACE OF ORGANIZATION                                                              |
|     |                                                                                                   |
|     |      Tennessee                                                                                    |
|-------------------------------|-------|-----------------------------------------------------------------|
|            NUMBER OF          |     5 |  SOLE VOTING POWER                                              |
|                               |       |                                                                 |
|             SHARES            |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|          BENEFICIALLY         |     6 |  SHARED VOTING POWER                                            |
|                               |       |                                                                 |
|            OWNED BY           |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|              EACH             |     7 |  SOLE DISPOSITIVE POWER                                         |
|                               |       |                                                                 |
|            REPORTING          |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|           PERSON WITH         |     8 |  SHARED DISPOSITIVE POWER                                       |
|                               |       |                                                                 |
|                               |       |    -0-                                                          |
|-------------------------------|-------|-----------------------------------------------------------------|
|   9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON                                      |
|     |                                                                                                   |
|     |   -0-                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES                              |
|     |                                                                                             [   ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|  11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9                                                   |
|     |                                                                                                   |
|     |    0%                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  12 | TYPE OF REPORTING PERSON*                                                                         |
|     |                                                                                                   |
|     |    IC, CO                                                                                         |
-----------------------------------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


   19



 CUSIP NO. 092477108                               13G                                 PAGE 19 OF 26 PAGES
     

-----------------------------------------------------------------------------------------------------------
|   1 | NAME OF REPORTING PERSON                                                                          |
|     | S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON                                                 |
|     |      United Financial Casualty Company                                                            |
|     |      36-3298008                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   2 | CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*                                       (a) [   ] |
|     |                                                                                             ----- |
|     |                                                                                         (b) [ X ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|   3 | SEC USE ONLY                                                                                      |
|     |                                                                                                   |
|-----|---------------------------------------------------------------------------------------------------|
|   4 | CITIZENSHIP OR PLACE OF ORGANIZATION                                                              |
|     |                                                                                                   |
|     |      Missouri                                                                                     |
|-------------------------------|-------|-----------------------------------------------------------------|
|            NUMBER OF          |     5 |  SOLE VOTING POWER                                              |
|                               |       |                                                                 |
|             SHARES            |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|          BENEFICIALLY         |     6 |  SHARED VOTING POWER                                            |
|                               |       |                                                                 |
|            OWNED BY           |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|              EACH             |     7 |  SOLE DISPOSITIVE POWER                                         |
|                               |       |                                                                 |
|            REPORTING          |       |    -0-                                                          |
|                               |-------|-----------------------------------------------------------------|
|           PERSON WITH         |     8 |  SHARED DISPOSITIVE POWER                                       |
|                               |       |                                                                 |
|                               |       |    -0-                                                          |
|-------------------------------|-------|-----------------------------------------------------------------|
|   9 | AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON                                      |
|     |                                                                                                   |
|     |   -0-                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  10 | CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES                              |
|     |                                                                                             [   ] |
|     |                                                                                             ----- |
|-----|---------------------------------------------------------------------------------------------------|
|  11 | PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9                                                   |
|     |                                                                                                   |
|     |    0%                                                                                             |
|-----|---------------------------------------------------------------------------------------------------|
|  12 | TYPE OF REPORTING PERSON*                                                                         |
|     |                                                                                                   |
|     |    IC, CO                                                                                         |
-----------------------------------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


   20

                                                            Page 20 of 26 Pages
                                                                 --    --


                                  SCHEDULE 13G


This Amendment No. 4 to Schedule 13G is filed to report that, as of June 29,
2001, The Progressive Corporation and certain of its subsidiaries no longer own,
beneficially or of record, any shares of the Common Stock of The BlackRock 2001
Term Trust Inc.

Item 1(a)         Name of Issuer:
---------         --------------

                  The name of the issuer is The BlackRock 2001 Term Trust Inc.
                  (the "Issuer").

Item 1(b)         Address of Issuer's Principal Executive Offices:
---------         -----------------------------------------------

                  The address of the Issuer's principal executive offices is
                  1285 Avenue of the Americas, New York, New York 10019.

Item 2(a)         Name of Person Filing:
---------         ---------------------

                  This statement is filed jointly by the following parties
                  (collectively, the "Reporting Persons"): (a) Halcyon Insurance
                  Company, an Ohio corporation,(b) Progressive Home Insurance
                  Company (formerly known as Midland Risk Insurance Company), a
                  Tennessee corporation,(c) PC Investment Company, a Delaware
                  corporation, (d) Progressive American Insurance Company, a
                  Florida corporation, (e) Progressive Bayside Insurance
                  Company, a Florida corporation, (f) Progressive Casualty
                  Insurance Company, an Ohio corporation,(g) Progressive Classic
                  Insurance Company, a Wisconsin corporation, (h) Progressive
                  Investment Company, Inc., a Delaware corporation, (i)
                  Progressive Mountain Insurance Company, a Colorado corporation
                  (j) Progressive Northern Insurance Company, a Wisconsin
                  corporation, (k) Progressive Northwestern Insurance Company, a
                  Washington corporation, (l) Progressive Preferred Insurance
                  Company, an Ohio corporation, (m) Progressive Premier
                  Insurance Company of Illinois, an Illinois corporation, (n)
                  Progressive Southeastern Insurance Company, a Florida
                  corporation, (o) Progressive Specialty Insurance Company, an
                  Ohio corporation, (p) Specialty Risk Insurance Company, a
                  Tennessee corporation, and (q) United Financial Casualty
                  Company, a Missouri corporation (collectively, the
                  "Subsidiaries"), and The Progressive Corporation, an Ohio
                  corporation, by virtue of its direct or indirect ownership of
                  all of the outstanding capital stock of the Subsidiaries.

                  All of the outstanding shares of PC Investment Company and
                  Progressive Specialty Insurance Company are owned by
                  Progressive Casualty Insurance Company; all of the outstanding
                  shares of Specialty Risk Insurance Company are owned by
                  Progressive Home Insurance Company and all of the outstanding
                  shares of Progressive Premier Insurance Company of Illinois
                  are owned by Progressive Northern Insurance Company. Except as
                  noted in the preceding sentence, all of the outstanding shares
                  of each of the Subsidiaries is owned directly by The
                  Progressive Corporation.

Item 2(b)         Address of Principal Business Office or, if none, Residence:
---------         -----------------------------------------------------------

                  The address of the principal business office of each of the
                  Reporting Persons is as follows:

                  Reporting Person                  Business Address
                  ----------------                  ----------------
                  The Progressive Corporation       6300 Wilson Mills Road
                                                    Mayfield Village, OH  44143

                  Halcyon Insurance Company         6300 Wilson Mills Road
                                                    Mayfield Village, OH  44143



   21

                                                            Page 21 of 26 Pages
                                                                 --    --


                  Reporting Person                  Business Address
                  ----------------                  ----------------
                  Progressive Home Insurance        965 Ridgelake Blvd.,
                  Company                           Suite 201
                                                    Memphis, TN 38120

                  PC Investment Company             801 West Street
                                                    Wilmington, DE  19801

                  Progressive American Insurance    4030 Crescent Park Dr.,
                  Company                           Bldg. B
                                                    Riverview, FL 33569

                  Progressive Bayside Insurance     4030 Crescent Park Dr.,
                  Company                           Bldg. B
                                                    Riverview, FL 33569

                  Progressive Casualty Insurance    6300 Wilson Mills Road
                  Company                           Mayfield Village, OH  44143

                  Progressive Classic Insurance     44 East Mifflin Street
                  Company                           Madison, WI  53703

                  Progressive Investment Company,   801 West Street
                  Inc.                              Wilmington, DE 19801

                  Progressive Mountain Insurance    2075 Research Parkway,
                  Company                           Suite A
                                                    Colorado Springs, CO 80920

                  Progressive Northern Insurance    44 East Mifflin Street
                  Company                           Madison, WI  53703

                  Progressive Northwestern          200 112th Ave., NE,
                  Insurance Company                 Suite 200 Bellevue,
                                                    Washington 98004

                  Progressive Preferred Insurance   6300 Wilson Mills Road
                  Company                           Mayfield Village, OH  44143

                  Progressive Premier Insurance     333 East Butterfield Road,
                  Company of Illinois               Suite 220,
                                                    Lombard, IL 60148

                  Progressive Southeastern          4030 Crescent Park Dr.,
                  Insurance Company                 Bldg. B
                                                    Riverview, FL  33569

                  Progressive Specialty Insurance   6300 Wilson Mills Road
                  Company                           Mayfield Village, OH  44143

                  Specialty Risk Insurance Company  965 Ridgelake Blvd.,
                                                    Suite 201
                                                    Memphis, TN 38120

                  United Financial Casualty         11457 Olde Cabin Rd,
                  Company                           Suite 235
                                                    St. Louis, MO  63141
Item 2(c)         Citizenship:
---------         -----------

                  Reporting Person                  State of Incorporation
                  ----------------                  ----------------------
             The Progressive Corporation                       Ohio
             Halcyon Insurance Company                         Ohio
             Progressive Home Insurance Company                Tennessee
             PC Investment Company                             Delaware
             Progressive American Insurance Company            Florida
             Progressive Bayside Insurance Company             Florida
             Progressive Casualty Insurance Company            Ohio


   22



                                                            Page 22 of 26 Pages
                                                                 --    --


                Reporting Person                      State of Incorporation
                ----------------                      -----------------------
     Progressive Classic Insurance Company                        Wisconsin
     Progressive Investment Company, Inc.                         Delaware
     Progressive Mountain Insurance Company                       Colorado
     Progressive Northern Insurance Company                       Wisconsin
     Progressive Northwestern Insurance Company                   Washington
     Progressive Preferred Insurance Company                      Ohio
     Progressive Premier Insurance Company of Illinois            Illinois
     Progressive Southeastern Insurance Company                   Florida
     Progressive Specialty Insurance Company                      Ohio
     Specialty Risk Insurance Company                             Tennessee
     United Financial Casualty Company                            Missouri

Item 2(d)         Title of Class of Securities:
---------         ----------------------------

                  The class of securities which is the subject of this Schedule
                  13G is the Common Shares, $.01 par value per share, of the
                  Issuer.

Item 2(e)         CUSIP Number:
---------         ------------

                  The CUSIP number for such class of securities is 092477108

Item 3.           Not Applicable.
------

Item 4.           Ownership (as of December 31, 1999)
------            ---------

                  (a)      Amount Beneficially Owned:             No. of Shares
                           --------------------------             -------------

                           The Progressive Corporation                   0

                           Subsidiaries
                           ------------
                           Halcyon Insurance Company                     0
                           Progressive Home Insurance Company            0
                           PC Investment Company                         0
                           Progressive American Insurance Company        0
                           Progressive Bayside Insurance Company         0
                           Progressive Casualty Insurance Company        0
                           Progressive Classic Insurance Company         0
                           Progressive Investment Company, Inc.          0
                           Progressive Mountain Insurance Company        0
                           Progressive Northern Insurance Company        0
                           Progressive Northwestern Insurance Company    0
                           Progressive Preferred Insurance Company       0
                           Progressive Premier Insurance Company of Ill. 0
                           Progressive Southeastern Insurance Company    0
                           Progressive Specialty Insurance Company       0



                           Amount Beneficially Owned:             No. of Shares
                           -------------------------              -------------
                           Specialty Risk Insurance Company              0
                           United Financial Casualty Company             0
                                                                  -------------

                                                        TOTAL:           0

(b)      Percent of Class                                              0%
         ----------------




   23



                                                            Page 23 of 26 Pages
                                                                 --    --



(c)  Number of shares as to which the person has
     -------------------------------------------



                                             (i)              (ii)                (iii)          (iv)

                                            Sole Power        Shared Power        Sole Power     Shared Power
                                            to Vote           to Vote             to Dispose     to Dispose
                                            or to             or to               or to          or to
                                            Direct            Direct              Direct the     Direct the
                                            the Vote          the Vote            Disposition    Disposition
                                            ---------         -----------         ----------     -----------

                                                                                               
The Progressive Corporation                 0                         0               0                    0

Subsidiaries
------------

Halcyon Insurance Company                   0                         0               0                    0

Progressive Home Insurance Company          0                         0               0                    0

PC Investment Company                       0                         0               0                    0

Progressive American Insurance Company      0                         0               0                    0

Progressive Bayside Insurance Company       0                         0               0                    0

Progressive Casualty Insurance Company      0                         0               0                    0

Progressive Classic Insurance Company       0                         0               0                    0

Progressive Investment Company, Inc.        0                         0               0                    0

Progressive Mountain Insurance Company      0                         0               0                    0

Progressive Northern Insurance Company      0                         0               0                    0

Progressive Northwestern Insurance Company  0                         0               0                    0

Progressive Preferred Insurance Company     0                         0               0                    0

Progressive Premier Insurance Company
 of Illinois                                0                         0               0                    0

Progressive Southeastern Insurance Company  0                         0               0                    0

Progressive Specialty Insurance Company     0                         0               0                    0

Specialty Risk Insurance Company            0                         0               0                    0

United Financial Casualty Company           0                         0               0                    0
                                                                  --------------                   -----------------

                  TOTALS                    0                         0               0                    0
                                          ---------               --------------                   -----------------


Item 5            Ownership of Five Percent or Less of a Class:
------            --------------------------------------------

                  If this statement is being filed to report the fact that as of
                  the date hereof the reporting person has ceased to be the
                  beneficial owner of more than five percent of the class of
                  securities, check the following:
                                                                             |X|

Item 6            Ownership of More than Five Percent on Behalf of Another
------            --------------------------------------------------------
                  Person:
                  -------


                  Not Applicable.




   24


                                                            Page 24 of 26 Pages
                                                                 --    --


Item 7            Identification and Classification of the Subsidiary Which
------            ---------------------------------------------------------
                  Acquired the Security Being Reported on By the Parent Holding
                  -------------------------------------------------------------
                  Company:
                  --------

                  Not Applicable.

Item 8            Identification and Classification of Members of the Group:
------            ---------------------------------------------------------

                  Not Applicable.

Item 9            Notice of Dissolution of Group:
------            ------------------------------

                  Not Applicable.

Item 10           Certifications:
-------           ---------------

                  By signing below, we certify that, to the best of our
                  knowledge and belief, the securities referred to above were
                  not acquired and are not held for the purpose of or with the
                  effect of changing or influencing the control of the issuer of
                  the securities and were not acquired and are not held in
                  connection with or as a participant in any transaction having
                  that purpose or effect.



   25


                                                            Page 25 of 26 Pages
                                                                 --    --



                                    SIGNATURE
                                    ---------


After reasonable inquiry and to the best of our knowledge and belief, the
undersigned hereby certify that the information set forth in this statement is
true, complete and correct.


Date:    July 9, 2001


The Progressive Corporation
Halcyon Insurance Company
PC Investment Company
Progressive American Insurance Company
Progressive Bayside Insurance Company
Progressive Casualty Insurance Company
Progressive Classic Insurance Company
Progressive Home Insurance Company
Progressive Investment Company, Inc.
Progressive Mountain Insurance Company
Progressive Northern Insurance Company
Progressive Northwestern Insurance Company
Progressive Preferred Insurance Company
Progressive Premier Insurance Company of Illinois
Progressive Southeastern Insurance Company
Progressive Specialty Insurance Company
Specialty Risk Insurance Company
United Financial Casualty Company



By:      /s/ Thomas A. King
         ------------------
         Thomas A. King
         Vice President




   26


                                                            Page 26 of 26 Pages
                                                                 --    --





                                    EXHIBIT A

This Exhibit A to Amendment No. 4 to Schedule 13G is filed pursuant to the
requirements of Rules 13d- 1(c) and 13d-1(k)(1). The undersigned hereby agree
that the Amendment No. 4 to the Schedule 13G to which this Exhibit is attached
is filed on behalf of each of the undersigned.


Dated:   July 9, 2001


The Progressive Corporation
Halcyon Insurance Company
PC Investment Company
Progressive American Insurance Company
Progressive Bayside Insurance Company
Progressive Casualty Insurance Company
Progressive Classic Insurance Company
Progressive Home Insurance Company
Progressive Investment Company, Inc.
Progressive Mountain Insurance Company
Progressive Northern Insurance Company
Progressive Northwestern Insurance Company
Progressive Preferred Insurance Company
Progressive Premier Insurance Company of Illinois
Progressive Southeastern Insurance Company
Progressive Specialty Insurance Company
Specialty Risk Insurance Company
United Financial Casualty Company





By:      /s/ Thomas A. King
         -------------------
         Thomas A. King
         Vice President