5 letter words:
nippy12,
piony10,
ippon9,
4 letter words:
pipy11,
piny9,
pioy9,
pony9,
pyin9,
yoni7,
pion6,
3 letter words:
yip8,
pip7,
pop7,
noy6,
ony6,
yin6,
yon6,
nip5,
pin5,
poi5,
ion3,
2 letter words:
ny5,
oy5,
yo5,
op4,
pi4,
po4,
in2,
io2,
no2,
oi2,
on2,