5 letter words:
bucko13,
kombu13,
combo11,
coomb11,
4 letter words:
zouk17,
bozo15,
mozo15,
zoom15,
ouzo13,
bock12,
buck12,
mock12,
muck12,
book10,
comb10,
cook10,
kobo10,
boom8,
umbo8,
3 letter words:
coz14,
zoo12,
kob9,
bum7,
cob7,
cub7,
cum7,
mob7,
moc7,
boo5,
coo5,
moo5,
2 letter words:
bo4,
mo4,
mu4,
om4,
um4,