5 letter words:
copen9,
ponce9,
4 letter words:
coop8,
cope8,
poco8,
cone6,
coon6,
nope6,
once6,
open6,
peon6,
pone6,
poon6,
3 letter words:
cep7,
cop7,
pec7,
con5,
coo5,
ope5,
pen5,
poo5,
eon3,
noo3,
one3,
ono3,
2 letter words:
op4,
pe4,
en2,
ne2,
no2,
oe2,
on2,