7 letter words:
autovac12,
5 letter words:
vacua10,
4 letter words:
cava9,
tava7,
vatu7,
vaut7,
acta6,
atoc6,
coat6,
octa6,
taco6,
atua4,
auto4,
3 letter words:
vac8,
ava6,
avo6,
ova6,
tav6,
uva6,
vat6,
vau6,
act5,
caa5,
cat5,
cot5,
cut5,
oca5,
toc5,
aua3,
oat3,
out3,
tao3,
tau3,
uta3,
2 letter words:
aa2,
at2,
ou2,
ta2,
to2,
ut2,