6 letter words:
abattu8,
5 letter words:
batta7,
battu7,
4 letter words:
abut6,
batt6,
buat6,
butt6,
tabu6,
tuba6,
atua4,
tatu4,
taut4,
3 letter words:
aba5,
baa5,
bat5,
but5,
tab5,
tub5,
att3,
aua3,
tat3,
tau3,
tut3,
uta3,
2 letter words:
ab4,
ba4,
aa2,
at2,
ta2,
ut2,
