5 letter words:
combo11,
coomb11,
4 letter words:
womb11,
comb10,
boom8,
coom8,
ombu8,
umbo8,
3 letter words:
cwm10,
bow8,
cow8,
mow8,
bum7,
cob7,
cub7,
cum7,
mob7,
moc7,
woo6,
boo5,
coo5,
moo5,
mou5,
obo5,
oom5,
2 letter words:
ow5,
wo5,
bo4,
mo4,
mu4,
ob4,
om4,
um4,
oo2,
ou2,