6 letter words:
abator8,
rabato8,
5 letter words:
abbot9,
abort7,
aroba7,
boart7,
rabat7,
tabor7,
aorta5,
4 letter words:
abba8,
baba8,
barb8,
boab8,
boba8,
arba6,
boar6,
boat6,
bora6,
bort6,
bota6,
brat6,
rata4,
rato4,
rota4,
tara4,
taro4,
tora4,
3 letter words:
abb7,
bob7,
aba5,
abo5,
arb5,
baa5,
bar5,
bat5,
boa5,
bor5,
bot5,
bra5,
bro5,
oba5,
orb5,
rob5,
tab5,
art3,
oar3,
oat3,
ora3,
ort3,
rat3,
rot3,
tao3,
tar3,
tor3,
2 letter words:
ab4,
ba4,
bo4,
ob4,
aa2,
ar2,
at2,
or2,
ta2,
to2,