6 letter words:
panino8,
5 letter words:
piano7,
pinna7,
pinon7,
anion5,
4 letter words:
nipa6,
pain6,
pian6,
pina6,
pion6,
anno4,
anon4,
nain4,
naoi4,
nona4,
noni4,
3 letter words:
apo5,
nap5,
nip5,
pan5,
pia5,
pin5,
poa5,
poi5,
ain3,
ani3,
ann3,
inn3,
ion3,
nan3,
non3,
2 letter words:
op4,
pa4,
pi4,
po4,
ai2,
an2,
in2,
io2,
na2,
no2,
oi2,
on2,