11 letter words:
overprotect18,
9 letter words:
protecter13,
protector13,
8 letter words:
overcrop15,
corvette13,
overpert13,
receptor12,
potterer10,
7 letter words:
coverer12,
coveter12,
overtop12,
pervert12,
recover12,
reprove12,
porrect11,
proctor11,
protect11,
evertor10,
erector9,
proette9,
treetop9,
trooper9,
6 letter words:
corvee11,
corvet11,
covert11,
prover11,
vector11,
cooper10,
copter10,
recept10,
revert9,
revote9,
trevet9,
trover9,
vetoer9,
vetter9,
cooter8,
cotter8,
perter8,
petter8,
poorer8,
porter8,
potter8,
pretor8,
rector8,
report8,
tercet8,
torpor8,
retore6,
retort6,
rooter6,
rotter6,
terret6,
tooter6,
torero6,
5 letter words:
cover10,
covet10,
poove10,
prove10,
coopt9,
coper9,
creep9,
crepe9,
crept9,
evert8,
overt8,
revet8,
rover8,
trove8,
voter8,
cooee7,
cooer7,
corer7,
crore7,
erect7,
octet7,
peter7,
petto7,
potto7,
recto7,
repot7,
repro7,
roper7,
terce7,
topee7,
toper7,
troop7,
trope7,
otter5,
retro5,
rotor5,
rotte5,
torot5,
torte5,
toter5,
4 letter words:
cove9,
perv9,
veep9,
cepe8,
coop8,
cope8,
crop8,
poco8,
ever7,
over7,
rove7,
veer7,
vert7,
veto7,
vote7,
cere6,
cero6,
cete6,
coot6,
core6,
cote6,
peer6,
pere6,
pert6,
poet6,
poor6,
pore6,
port6,
pree6,
repo6,
rope6,
tope6,
topo6,
torc6,
trop6,
otto4,
rete4,
root4,
rote4,
roto4,
toot4,
tore4,
toro4,
torr4,
tort4,
tote4,
tree4,
tret4,
trot4,
3 letter words:
cep7,
cop7,
pec7,
eve6,
rev6,
vee6,
vet6,
voe6,
cee5,
coo5,
cor5,
cot5,
ope5,
opt5,
orc5,
pee5,
per5,
pet5,
poo5,
pot5,
pro5,
rec5,
rep5,
roc5,
top5,
ere3,
err3,
oot3,
ore3,
ort3,
ree3,
ret3,
roe3,
rot3,
tee3,
tet3,
toe3,
too3,
tor3,
tot3,
2 letter words:
op4,
pe4,
er2,
et2,
oe2,
or2,
re2,
to2,
