6 letter words:
finite9,
intine6,
5 letter words:
feint8,
unfit8,
ennui5,
unite5,
untie5,
4 letter words:
enuf7,
fine7,
neif7,
etui4,
inti4,
nine4,
nite4,
tine4,
tune4,
unit4,
3 letter words:
eft6,
fen6,
fet6,
feu6,
fie6,
fin6,
fit6,
fun6,
inn3,
net3,
nit3,
nun3,
nut3,
ten3,
tie3,
tin3,
tui3,
tun3,
ute3,
2 letter words:
ef5,
fe5,
if5,
en2,
et2,
in2,
it2,
ne2,
nu2,
ti2,
un2,
ut2,