6 letter words:
pinene8,
pinnie8,
neinei6,
5 letter words:
penie7,
penne7,
penni7,
unpen7,
unpin7,
ennui5,
4 letter words:
neep6,
peen6,
pein6,
pene6,
peni6,
pine6,
eine4,
nene4,
nine4,
3 letter words:
nep5,
nip5,
pee5,
pen5,
pie5,
pin5,
piu5,
pun5,
een3,
ene3,
inn3,
nee3,
nie3,
nun3,
uni3,
2 letter words:
pe4,
pi4,
up4,
ee2,
en2,
in2,
ne2,
nu2,
un2,