4 letter words:
fain7,
fane7,
fano7,
fine7,
fino7,
foin7,
info7,
naif7,
neif7,
aeon4,
naoi4,
3 letter words:
fan6,
fen6,
fie6,
fin6,
foe6,
fon6,
oaf6,
ain3,
ane3,
ani3,
eon3,
ion3,
nae3,
one3,
2 letter words:
ef5,
fa5,
fe5,
if5,
of5,
ae2,
ai2,
an2,
en2,
in2,
na2,
ne2,
no2,
oe2,
oi2,
on2,