10 letter words:
perforator15,
9 letter words:
perorator11,
8 letter words:
forepart13,
operator10,
parroter10,
7 letter words:
foretop12,
poofter12,
proofer12,
reproof12,
praetor9,
prorate9,
trooper9,
6 letter words:
foetor9,
footer9,
frater9,
rafter9,
reroof9,
roofer9,
parrot8,
poorer8,
porter8,
prater8,
pretor8,
protea8,
raptor8,
report8,
torpor8,
orator6,
roarer6,
rooter6,
terror6,
torero6,
5 letter words:
proof10,
afoot8,
afore8,
after8,
farer8,
fetor8,
forte8,
frore8,
ofter8,
aport7,
apter7,
opera7,
pareo7,
parer7,
pater7,
peart7,
prate7,
raper7,
repot7,
repro7,
roper7,
taper7,
toper7,
troop7,
trope7,
error5,
oater5,
orate5,
rarer5,
rater5,
retro5,
rotor5,
tarre5,
terra5,
4 letter words:
frap9,
poof9,
prof9,
fare7,
faro7,
fart7,
fate7,
fear7,
feat7,
feta7,
foot7,
fora7,
fore7,
fort7,
frae7,
frat7,
fret7,
froe7,
raft7,
reft7,
roof7,
tref7,
aper6,
atop6,
pare6,
parr6,
part6,
pate6,
pear6,
peat6,
pert6,
poet6,
poor6,
pore6,
port6,
prao6,
prat6,
proa6,
rape6,
rapt6,
reap6,
repo6,
rope6,
tape6,
tarp6,
tepa6,
tope6,
topo6,
trap6,
trop6,
aero4,
orra4,
rare4,
rate4,
rato4,
rear4,
roar4,
root4,
rota4,
rote4,
roto4,
tare4,
taro4,
tear4,
toea4,
tora4,
tore4,
toro4,
torr4,
3 letter words:
fop8,
aft6,
arf6,
eft6,
far6,
fat6,
fer6,
fet6,
foe6,
for6,
fro6,
oaf6,
oft6,
ref6,
ape5,
apo5,
apt5,
ope5,
opt5,
par5,
pat5,
pea5,
per5,
pet5,
poo5,
pot5,
pro5,
rap5,
rep5,
tap5,
top5,
are3,
art3,
ate3,
ear3,
eat3,
era3,
err3,
eta3,
oar3,
oat3,
oot3,
ora3,
ore3,
ort3,
rat3,
ret3,
roe3,
rot3,
tae3,
tao3,
tar3,
tea3,
toe3,
too3,
tor3,
2 letter words:
ef5,
fa5,
fe5,
of5,
op4,
pa4,
pe4,
ae2,
ar2,
at2,
er2,
et2,
oe2,
or2,
re2,
ta2,
to2,
