Solutions :
3-letter words (1 point): 19
BID; DIB; DIM; DOE; DOM; DON; END; EON; MIB; MID; MOD; MOE; MON; MOZ; NOD; NOM; NTH; ONE; SHH.
4-letter words (1 point): 7
DOEN; DONE; DOZE; MODI; MOZE; NODI; ZONE.
5-letter words (2 points): 5
BIDON; DIBBS; DOZEN; MONTH; ZOMBI.
6-letter word (3 points): 1
MONTHS.
7-letter word (7 points): 1
DOZENTH.
8-letter word (11 points): 1
DOZENTHS.