6 letter words:
bobcat12,
5 letter words:
bobac11,
cabob11,
abbot9,
4 letter words:
cobb10,
boab8,
boba8,
atoc6,
boat6,
bota6,
coat6,
octa6,
taco6,
3 letter words:
abb7,
bac7,
bob7,
cab7,
cob7,
abo5,
act5,
bat5,
boa5,
bot5,
cat5,
cot5,
oba5,
oca5,
tab5,
toc5,
oat3,
tao3,
2 letter words:
ab4,
ba4,
bo4,
ob4,
at2,
ta2,
to2,