5 letter words:
pengo8,
unpeg8,
4 letter words:
pong7,
pung7,
nope6,
open6,
peon6,
pone6,
upon6,
genu5,
gone5,
3 letter words:
peg6,
pug6,
ope5,
pen5,
pun5,
upo5,
ego4,
eng4,
gen4,
gnu4,
gun4,
neg4,
nog4,
eon3,
one3,
2 letter words:
op4,
pe4,
up4,
go3,
en2,
ne2,
no2,
nu2,
oe2,
on2,
un2,