7 letter words:
proofer12,
reproof12,
6 letter words:
reroof9,
roofer9,
poorer8,
5 letter words:
proof10,
afore8,
farer8,
frore8,
opera7,
pareo7,
parer7,
raper7,
repro7,
roper7,
4 letter words:
frap9,
poof9,
prof9,
fare7,
faro7,
fear7,
fora7,
fore7,
frae7,
froe7,
roof7,
aper6,
pare6,
parr6,
pear6,
poor6,
pore6,
prao6,
proa6,
rape6,
reap6,
repo6,
rope6,
aero4,
orra4,
rare4,
rear4,
roar4,
3 letter words:
fop8,
arf6,
far6,
fer6,
foe6,
for6,
fro6,
oaf6,
ref6,
ape5,
apo5,
ope5,
par5,
pea5,
per5,
poo5,
pro5,
rap5,
rep5,
are3,
ear3,
era3,
err3,
oar3,
ora3,
ore3,
roe3,
2 letter words:
ef5,
fa5,
fe5,
of5,
op4,
pa4,
pe4,
ae2,
ar2,
er2,
oe2,
or2,
re2,