7 letter words:
catboat11,
5 letter words:
abaci9,
cobia9,
attic7,
biota7,
coati7,
cotta7,
tacit7,
4 letter words:
acta6,
bait6,
batt6,
bitt6,
boat6,
bota6,
bott6,
ciao6,
coat6,
obia6,
obit6,
otic6,
taco6,
tact6,
iota4,
toit4,
3 letter words:
cab7,
cob7,
aba5,
abo5,
act5,
baa5,
bat5,
bio5,
bit5,
boa5,
bot5,
cat5,
cot5,
oba5,
obi5,
oca5,
tab5,
tic5,
ait3,
att3,
oat3,
tao3,
tat3,
tit3,
tot3,
2 letter words:
ab4,
ba4,
bi4,
bo4,
aa2,
ai2,
at2,
it2,
oi2,
ta2,
ti2,
to2,