4 letter words:
knop10,
penk10,
poke10,
ponk10,
keno8,
foen7,
fone7,
nope6,
open6,
peon6,
pone6,
3 letter words:
kef10,
kep9,
kop9,
fop8,
ken7,
kon7,
nek7,
oke7,
fen6,
foe6,
fon6,
nef6,
nep5,
ope5,
pen5,
eon3,
one3,
2 letter words:
ko6,
ef5,
fe5,
of5,
op4,
pe4,
po4,
en2,
ne2,
no2,
oe2,
on2,