5 letter words:
opine7,
4 letter words:
pfui9,
pouf9,
enuf7,
feni7,
fine7,
fino7,
foen7,
foin7,
fone7,
info7,
neif7,
nief7,
nife7,
nope6,
noup6,
open6,
pein6,
peni6,
peon6,
pine6,
pion6,
pone6,
upon6,
euoi4,
onie4,
3 letter words:
fop8,
fen6,
feu6,
fie6,
fin6,
foe6,
fon6,
fou6,
fun6,
nef6,
ufo6,
nep5,
nip5,
ope5,
oup5,
pen5,
pie5,
pin5,
piu5,
poi5,
pun5,
upo5,
eon3,
ion3,
nie3,
one3,
uni3,
2 letter words:
ef5,
fe5,
if5,
of5,
op4,
pe4,
pi4,
po4,
up4,
en2,
in2,
io2,
ne2,
no2,
nu2,
oe2,
oi2,
on2,
ou2,
un2,