4 letter words:
filo7,
fino7,
foil7,
foin7,
foul7,
info7,
lino4,
lion4,
loin4,
loun4,
noil4,
noul4,
3 letter words:
fil6,
fin6,
flu6,
fon6,
fou6,
fun6,
ufo6,
ion3,
lin3,
lou3,
nil3,
oil3,
uni3,
2 letter words:
if5,
of5,
in2,
io2,
li2,
lo2,
no2,
nu2,
oi2,
on2,
ou2,
un2,