5 letter words:
fagin9,
ganof9,
gonif9,
gonia6,
4 letter words:
fang8,
fain7,
fano7,
fino7,
foin7,
info7,
naif7,
agin5,
agio5,
agon5,
gain5,
naoi4,
3 letter words:
fag7,
fig7,
fog7,
fan6,
fin6,
fon6,
oaf6,
ago4,
gan4,
gin4,
goa4,
nag4,
nog4,
ain3,
ani3,
ion3,
2 letter words:
fa5,
if5,
of5,
ag3,
go3,
ai2,
an2,
in2,
na2,
no2,
oi2,
on2,