6 letter words:
perron8,
proner8,
5 letter words:
porer7,
prone7,
prore7,
repro7,
roper7,
4 letter words:
nope6,
open6,
peon6,
pern6,
pone6,
pore6,
porn6,
repo6,
rope6,
oner4,
rone4,
rore4,
3 letter words:
nep5,
ope5,
pen5,
per5,
pre5,
pro5,
rep5,
eon3,
ern3,
err3,
nor3,
one3,
ore3,
ren3,
reo3,
roe3,
2 letter words:
op4,
pe4,
po4,
en2,
er2,
ne2,
no2,
oe2,
on2,
or2,
re2,