5 letter words:
bobak13,
kabob13,
borak11,
4 letter words:
bark10,
boak10,
bork10,
brak10,
kbar10,
krab10,
barb8,
boab8,
boba8,
karo8,
kora8,
okra8,
boar6,
bora6,
3 letter words:
bok9,
kab9,
kob9,
abb7,
ark7,
bob7,
koa7,
kor7,
oak7,
oka7,
rok7,
abo5,
arb5,
bar5,
boa5,
bor5,
bra5,
bro5,
oba5,
orb5,
rob5,
oar3,
ora3,
2 letter words:
ka6,
ko6,
ab4,
ba4,
bo4,
ob4,
ar2,
or2,