S1E1X8T1O1D2E1C3I1M3O1
23 points
SEXTODECIMO is validvalid
[n SEXTODECIMOS]
a book size 5 5/8 in. x 4 3/8 in. (abbreviated as 16mo.), also SIXTEENMO [n -S]
[n SEXTODECIMOS]
a book size 5 5/8 in. x 4 3/8 in. (abbreviated as 16mo.), also SIXTEENMO [n -S]