7 letter words:
pogonip12,
pooping12,
6 letter words:
ooping9,
pooing9,
5 letter words:
gippo10,
ippon9,
gipon8,
oping8,
pingo8,
pongo8,
4 letter words:
oppo8,
poop8,
goop7,
ping7,
pogo7,
pong7,
noop6,
pion6,
poon6,
goon5,
ingo5,
3 letter words:
pip7,
pop7,
gip6,
pig6,
nip5,
oop5,
pin5,
poi5,
poo5,
gin4,
gio4,
gon4,
goo4,
nog4,
ion3,
noo3,
ono3,
oon3,
2 letter words:
op4,
pi4,
po4,
gi3,
go3,
in2,
io2,
no2,
oi2,
on2,
oo2,