7 letter words:
offeror13,
6 letter words:
reroof9,
roofer9,
5 letter words:
offer11,
reffo11,
frore8,
4 letter words:
fore7,
froe7,
orfe7,
roof7,
rore4,
3 letter words:
eff9,
off9,
erf6,
fer6,
foe6,
for6,
fro6,
oof6,
orf6,
ref6,
err3,
oor3,
ore3,
reo3,
roe3,
roo3,
2 letter words:
ef5,
fe5,
of5,
er2,
oe2,
oo2,
or2,
re2,
