4 letter words:
knop10,
penk10,
poke10,
ponk10,
keno8,
pepo8,
poep8,
pope8,
nope6,
open6,
peon6,
pone6,
3 letter words:
kep9,
kop9,
ken7,
kon7,
nek7,
oke7,
pep7,
pop7,
nep5,
ope5,
pen5,
eon3,
one3,
2 letter words:
ko6,
op4,
pe4,
po4,
en2,
ne2,
no2,
oe2,
on2,