7 letter words:
roupier9,
6 letter words:
proper10,
ripper10,
pourer8,
repour8,
ropier8,
5 letter words:
piper9,
preop9,
upper9,
prier7,
prior7,
purer7,
repro7,
riper7,
roper7,
ourie5,
4 letter words:
pepo8,
perp8,
pipe8,
pope8,
prep8,
prop8,
repp8,
peri6,
pier6,
pore6,
pour6,
pure6,
puri6,
purr6,
repo6,
ripe6,
rope6,
roup6,
euro4,
roue4,
ruer4,
3 letter words:
pep7,
pip7,
pop7,
pup7,
ope5,
per5,
pie5,
piu5,
poi5,
pro5,
pur5,
rep5,
rip5,
upo5,
urp5,
err3,
ire3,
ore3,
our3,
rei3,
roe3,
rue3,
2 letter words:
op4,
pe4,
pi4,
up4,
er2,
oe2,
oi2,
or2,
re2,