BellBoard

 2 3 4 5 6              W. T. M. F. H.
 ---------              --------------
 4 3 5 2 6              2        X  -
(4 3 5 2 6)             3  S  3  S
 6 3 4 2 5                    2
 2 3 4 6 5              S           3
 5 4 3 2 6              S     -     -
 3 4 6 2 5                    -
(3 4 6 2 5)             3  S  3  S
 3 5 4 2 6                    2     -
 2 3 4 5 6              -           3


X = F,I,B


24 each 5678, 6578, 8765, 8756
70 LB4, inc 18 6543, 14 5432, 12 3456
Front: 12 each 5678, 6578, 8765, 8756
52 LB4F, inc 12 each 1234, 4321 and 8 each 2345, 3456
504 5678 combinations (288 back, 216 front)