5 letter words:
gumbo10,
4 letter words:
tomb8,
umbo8,
bout6,
gout5,
3 letter words:
bum7,
mob7,
bog6,
bug6,
gob6,
gum6,
mog6,
mug6,
bot5,
but5,
mot5,
mut5,
tom5,
tub5,
got4,
gut4,
tog4,
tug4,
out3,
2 letter words:
bo4,
mo4,
mu4,
om4,
um4,
go3,
to2,
ut2,