6 letter words:
protei8,
5 letter words:
opter7,
piert7,
repot7,
toper7,
tripe7,
trope7,
4 letter words:
peri6,
pert6,
pier6,
piet6,
poet6,
pore6,
port6,
pote6,
repo6,
ripe6,
ript6,
rope6,
tope6,
topi6,
trip6,
trop6,
riot4,
rite4,
rote4,
roti4,
tier4,
tire4,
tiro4,
tore4,
tori4,
trie4,
trio4,
3 letter words:
ope5,
opt5,
per5,
pet5,
pie5,
pir5,
pit5,
poi5,
pot5,
pre5,
pro5,
rep5,
rip5,
tip5,
top5,
ire3,
ore3,
ort3,
rei3,
reo3,
ret3,
rit3,
roe3,
rot3,
tie3,
toe3,
tor3,
2 letter words:
op4,
pe4,
pi4,
po4,
er2,
et2,
io2,
it2,
oe2,
oi2,
or2,
re2,
te2,
ti2,
to2,