9 letter words:
ectoproct15,
7 letter words:
cocotte11,
protect11,
6 letter words:
cooper10,
copter10,
cooter8,
cotter8,
potter8,
tooter6,
5 letter words:
coopt9,
coper9,
crept9,
cooer7,
octet7,
petto7,
potto7,
recto7,
repot7,
toper7,
troop7,
trope7,
otter5,
rotte5,
torot5,
torte5,
toter5,
4 letter words:
coco8,
coop8,
cope8,
croc8,
crop8,
poco8,
cero6,
coot6,
core6,
cote6,
pert6,
poet6,
poor6,
pore6,
port6,
repo6,
rope6,
tope6,
topo6,
torc6,
trop6,
otto4,
root4,
rote4,
roto4,
toot4,
tore4,
toro4,
tort4,
tote4,
tret4,
trot4,
3 letter words:
cep7,
cop7,
pec7,
coo5,
cor5,
cot5,
ope5,
opt5,
orc5,
per5,
pet5,
poo5,
pot5,
pro5,
rec5,
rep5,
roc5,
top5,
oot3,
ore3,
ort3,
ret3,
roe3,
rot3,
tet3,
toe3,
too3,
tor3,
tot3,
2 letter words:
op4,
pe4,
er2,
et2,
oe2,
or2,
re2,
to2,