7 letter words:
cooping12,
6 letter words:
coping11,
cooing9,
pooing9,
5 letter words:
cogon8,
coign8,
congo8,
gipon8,
incog8,
oping8,
pingo8,
4 letter words:
coop8,
poco8,
goop7,
ping7,
pong7,
cion6,
coin6,
coni6,
coon6,
icon6,
pion6,
poon6,
goon5,
3 letter words:
cop7,
pic7,
cig6,
cog6,
gip6,
pig6,
con5,
coo5,
nip5,
pin5,
poi5,
poo5,
gin4,
goo4,
nog4,
ion3,
noo3,
ono3,
2 letter words:
op4,
pi4,
go3,
in2,
no2,
oi2,
on2,