6 letter words:
karroo10,
arroba8,
5 letter words:
babka13,
kabab13,
kabob13,
brook11,
kabar11,
baboo9,
karoo9,
arbor7,
4 letter words:
bark10,
book10,
bork10,
kbar10,
kobo10,
abba8,
arak8,
baba8,
barb8,
boob8,
kora8,
okra8,
rook8,
boar6,
boor6,
bora6,
broo6,
orra4,
roar4,
3 letter words:
kab9,
kob9,
ark7,
bob7,
koa7,
kor7,
oak7,
oka7,
aba5,
abo5,
arb5,
baa5,
bar5,
boa5,
boo5,
bra5,
bro5,
brr5,
oba5,
orb5,
rob5,
oar3,
ora3,
2 letter words:
ka6,
ab4,
ba4,
bo4,
aa2,
ar2,
or2,