7 letter words:
ratatat7,
tuatara7,
5 letter words:
aorta5,
attar5,
ottar5,
tarot5,
tatar5,
torta5,
trout5,
tutor5,
4 letter words:
aura4,
auto4,
rato4,
rota4,
rout4,
taro4,
tart4,
taut4,
tora4,
tort4,
tour4,
tout4,
trot4,
3 letter words:
art3,
att3,
oar3,
oat3,
ora3,
ort3,
our3,
out3,
rat3,
rot3,
rut3,
tao3,
tar3,
tat3,
tau3,
tor3,
tot3,
tut3,
uta3,
2 letter words:
aa2,
ar2,
at2,
or2,
ta2,
to2,
ut2,