7 letter words:
opinion9,
6 letter words:
wanion9,
panini8,
panino8,
pinion8,
5 letter words:
piano7,
pinna7,
pinon7,
anion5,
inion5,
onion5,
4 letter words:
pawn9,
wain7,
wino7,
nipa6,
pain6,
pian6,
pina6,
pion6,
poon6,
anon4,
inia4,
naoi4,
nona4,
noon4,
3 letter words:
paw8,
pow8,
wap8,
wop8,
awn6,
naw6,
now6,
own6,
wan6,
win6,
won6,
woo6,
apo5,
nap5,
nip5,
pan5,
pia5,
pin5,
poi5,
poo5,
ain3,
ani3,
inn3,
ion3,
nan3,
noo3,
ono3,
2 letter words:
aw5,
ow5,
wo5,
op4,
pa4,
pi4,
ai2,
an2,
in2,
na2,
no2,
oi2,
on2,