4 letter words:
haut7,
oath7,
ohia7,
thio7,
thou7,
auto4,
iota4,
3 letter words:
ahi6,
hao6,
hat6,
hit6,
hot6,
hut6,
tho6,
ait3,
oat3,
out3,
tao3,
tau3,
tui3,
uta3,
2 letter words:
ah5,
ha5,
hi5,
ho5,
oh5,
uh5,
ai2,
at2,
it2,
oi2,
ta2,
ti2,
to2,
ut2,