5 letter words:
porer7,
prore7,
repro7,
roper7,
4 letter words:
peer6,
pere6,
pore6,
pree6,
repo6,
rope6,
rore4,
3 letter words:
ope5,
pee5,
per5,
pre5,
pro5,
rep5,
ere3,
err3,
ore3,
ree3,
reo3,
roe3,
2 letter words:
op4,
pe4,
po4,
ee2,
er2,
oe2,
or2,
re2,