4 letter words:
fief10,
fife10,
teff10,
tiff10,
toff10,
fate7,
feat7,
feta7,
fiat7,
iota4,
toea4,
3 letter words:
aff9,
eff9,
iff9,
off9,
aft6,
eft6,
fat6,
fet6,
fie6,
fit6,
foe6,
oaf6,
oft6,
ait3,
ate3,
eat3,
eta3,
oat3,
tae3,
tao3,
tea3,
tie3,
toe3,
2 letter words:
ef5,
fa5,
fe5,
if5,
of5,
ae2,
ai2,
at2,
et2,
it2,
oe2,
oi2,
ta2,
ti2,
to2,