5 letter words:
aroba7,
4 letter words:
abba8,
baba8,
barb8,
boab8,
boba8,
arba6,
boar6,
bora6,
3 letter words:
abb7,
bob7,
aba5,
abo5,
arb5,
baa5,
bar5,
boa5,
bor5,
bra5,
bro5,
oba5,
orb5,
rob5,
oar3,
ora3,
2 letter words:
ab4,
ba4,
bo4,
ob4,
aa2,
ar2,
or2,