8 letter words:
cropping15,
7 letter words:
copping14,
6 letter words:
coping11,
coring9,
poring9,
roping9,
5 letter words:
coign8,
corgi8,
gipon8,
incog8,
oping8,
orgic8,
pingo8,
pirog8,
prong8,
orcin7,
orpin7,
prion7,
giron6,
groin6,
4 letter words:
crop8,
prop8,
gorp7,
grip7,
ping7,
pong7,
prig7,
prog7,
cion6,
coin6,
coir6,
coni6,
corn6,
icon6,
pion6,
pirn6,
porn6,
girn5,
giro5,
grin5,
ring5,
inro4,
iron4,
noir4,
nori4,
3 letter words:
cop7,
pic7,
pip7,
pop7,
cig6,
cog6,
gip6,
pig6,
con5,
cor5,
nip5,
orc5,
pin5,
poi5,
pro5,
rip5,
roc5,
gin4,
gor4,
nog4,
rig4,
ion3,
nor3,
rin3,
2 letter words:
op4,
pi4,
go3,
in2,
no2,
oi2,
on2,
or2,
