6 letter words:
lopper10,
propel10,
5 letter words:
preop9,
loper7,
poler7,
prole7,
4 letter words:
pepo8,
perp8,
plop8,
pope8,
prep8,
prop8,
repp8,
lope6,
pole6,
pore6,
repo6,
rope6,
lore4,
orle4,
role4,
3 letter words:
pep7,
pop7,
lop5,
ope5,
per5,
pol5,
pro5,
rep5,
ole3,
ore3,
roe3,
2 letter words:
op4,
pe4,
el2,
er2,
lo2,
oe2,
or2,
re2,