cols 23 & 24 col. 24a
col. [24b] cols 25 & 26
cols 27 & 28 cols 29 & 30
cols 31 & 32 cols 33 & 34
cols 35 & 36 cols 37 & 38
cols 39 & 40 f. [12] r
f. [12] v inside back board
outside back board