outside front board
inside front board f. [i] r
f. [i] v f. [ii] r
f. [ii] v f. [iii] r
f. [iii] v cols 1 & 2
cols 3 & 4 cols 5 & 6
cols 7 & 8 cols 9 & 10
cols 11 & 12 cols 13 & 14
cols 15 & 16 cols 17 & 18
cols 19 & 20 cols 21 & 22