6 letter words:
pinene8,
unopen8,
5 letter words:
opine7,
penne7,
penni7,
pinon7,
unpen7,
unpin7,
ennui5,
union5,
4 letter words:
pfui9,
pouf9,
enuf7,
fine7,
fino7,
foin7,
info7,
neif7,
neep6,
nope6,
open6,
peen6,
pein6,
peon6,
pine6,
pion6,
pone6,
upon6,
nene4,
neon4,
nine4,
none4,
noun4,
3 letter words:
fop8,
fee6,
fen6,
feu6,
fie6,
fin6,
foe6,
fon6,
fou6,
fun6,
nip5,
ope5,
pee5,
pen5,
pie5,
pin5,
piu5,
poi5,
pun5,
upo5,
eon3,
inn3,
ion3,
nee3,
nun3,
one3,
2 letter words:
ef5,
fe5,
if5,
of5,
op4,
pe4,
pi4,
up4,
en2,
in2,
ne2,
no2,
nu2,
oe2,
oi2,
on2,
un2,