5 letter words:
bobak13,
kabob13,
4 letter words:
boak10,
boab8,
boba8,
obia6,
3 letter words:
bok9,
kab9,
kob9,
abb7,
bib7,
bob7,
kai7,
koa7,
koi7,
oak7,
oik7,
oka7,
abo5,
bio5,
boa5,
boi5,
oba5,
obi5,
2 letter words:
ka6,
ki6,
ko6,
ab4,
ba4,
bi4,
bo4,
ob4,
ai2,
io2,
oi2,