7 letter words:
proctor11,
6 letter words:
torpor8,
5 letter words:
coopt9,
troop7,
rotor5,
4 letter words:
coop8,
crop8,
poco8,
coot6,
poor6,
port6,
topo6,
torc6,
trop6,
root4,
roto4,
toro4,
torr4,
3 letter words:
cop7,
coo5,
cor5,
cot5,
opt5,
orc5,
poo5,
pot5,
pro5,
roc5,
top5,
oot3,
ort3,
rot3,
too3,
tor3,
2 letter words:
op4,
or2,
to2,