5 letter words:
gumbo10,
4 letter words:
ombu8,
umbo8,
biog7,
3 letter words:
bum7,
mib7,
mob7,
big6,
bog6,
bug6,
gib6,
gob6,
gub6,
gum6,
mig6,
mog6,
mug6,
bio5,
boi5,
moi5,
mou5,
obi5,
gio4,
2 letter words:
bi4,
bo4,
mi4,
mo4,
mu4,
ob4,
om4,
um4,
gi3,
go3,
gu3,
ug3,
io2,
oi2,
ou2,