5 letter words:
aback13,
babka13,
kabab13,
kabob13,
cabob11,
abaci9,
cobia9,
4 letter words:
back12,
bock12,
cobb10,
abba8,
baba8,
ciao6,
obia6,
3 letter words:
ick9,
kab9,
kob9,
bib7,
bob7,
cab7,
cob7,
koa7,
koi7,
oak7,
oka7,
aba5,
abo5,
baa5,
bio5,
boa5,
oba5,
obi5,
oca5,
2 letter words:
ka6,
ki6,
ab4,
ba4,
bi4,
bo4,
aa2,
ai2,
oi2,