5 letter words:
aback13,
4 letter words:
back12,
bock12,
kaka12,
boak10,
abac8,
caba8,
3 letter words:
kak11,
bok9,
kab9,
kob9,
aka7,
bac7,
cab7,
cob7,
koa7,
oak7,
oka7,
aba5,
abo5,
baa5,
boa5,
caa5,
oba5,
oca5,
2 letter words:
ka6,
ko6,
ab4,
ba4,
bo4,
ob4,
aa2,