BellBoard

W  V  B  I   M  H
-----------------
      1            35264
------------------------
-               -  26354|
-  - [F      s] -  62354|
-               -  35624|A
             -  -  46523|
*  -  F            35246|
   -  F      s     52436|
------------------------
      1            23564
         A         35426
s     1            53264
         A*        32456
      1            25364
-               -  36254
-  -  sF     -  -  63254
-               -  25634
         1      2  325746
-  -   F    ss     452736
   -     F         327456
         1         243657
      s  2 sT,In   243765
   2   F     s     534267
      1            32564
         A         25436
s     1            52364
         A*        23456
-------------------------
Replace [F,sM] with sF,M in all but the first A-block.
A* = A, with a pair of singles at *.

Composed 3rd January 2019, but based on a six-part block devised in January 2016.