5 letter words:
babul9,
bubal9,
4 letter words:
babu8,
blab8,
blob8,
blub8,
boab8,
boba8,
buba8,
bubo8,
bulb8,
balu6,
bola6,
3 letter words:
abb7,
bob7,
bub7,
abo5,
alb5,
bal5,
boa5,
lab5,
lob5,
oba5,
lou3,
2 letter words:
ab4,
ba4,
bo4,
ob4,
al2,
la2,
lo2,
ou2,