4 letter words:
teff10,
toff10,
fate7,
feat7,
feta7,
toea4,
3 letter words:
aff9,
eff9,
off9,
aft6,
eft6,
fae6,
fat6,
fet6,
foe6,
oaf6,
oft6,
tef6,
ate3,
eat3,
eta3,
oat3,
tae3,
tao3,
tea3,
toe3,
2 letter words:
ef5,
fa5,
fe5,
of5,
ae2,
at2,
ea2,
et2,
oe2,
ta2,
te2,
to2,