9 letter words:
propretor13,
7 letter words:
protore9,
trooper9,
6 letter words:
pooper10,
proper10,
topper10,
troppo10,
poorer8,
pooter8,
porter8,
pretor8,
report8,
torpor8,
rooter6,
rorter6,
terror6,
torero6,
5 letter words:
epopt9,
preop9,
opter7,
poort7,
porer7,
prore7,
repot7,
repro7,
roper7,
toper7,
troop7,
trope7,
error5,
retro5,
rotor5,
4 letter words:
oppo8,
pepo8,
perp8,
poep8,
poop8,
pope8,
prep8,
prop8,
repp8,
pert6,
poet6,
poor6,
poot6,
pore6,
port6,
pote6,
proo6,
repo6,
roop6,
rope6,
tope6,
topo6,
trop6,
root4,
rore4,
rort4,
rote4,
roto4,
tore4,
toro4,
torr4,
3 letter words:
pep7,
pop7,
oop5,
ope5,
opt5,
per5,
pet5,
poo5,
pot5,
pre5,
pro5,
rep5,
top5,
err3,
oor3,
oot3,
ore3,
ort3,
reo3,
ret3,
roe3,
roo3,
rot3,
toe3,
too3,
tor3,
2 letter words:
op4,
pe4,
po4,
er2,
et2,
oe2,
oo2,
or2,
re2,
te2,
to2,