6 letter words:
outact8,
5 letter words:
cotta7,
4 letter words:
acta6,
coat6,
coot6,
taco6,
tact6,
auto4,
otto4,
taut4,
toot4,
tout4,
3 letter words:
act5,
cat5,
coo5,
cot5,
cut5,
oca5,
att3,
oat3,
oot3,
out3,
tao3,
tat3,
tau3,
too3,
tot3,
tut3,
uta3,
2 letter words:
aa2,
at2,
ta2,
to2,
ut2,