9 letter words:
feverroot15,
8 letter words:
rooftree11,
7 letter words:
forever13,
evertor10,
6 letter words:
fervor12,
ferret9,
foetor9,
footer9,
refoot9,
reroof9,
revert9,
revote9,
roofer9,
tofore9,
trover9,
vetoer9,
retore6,
rooter6,
torero6,
5 letter words:
fever11,
evert8,
ferer8,
fetor8,
forte8,
freer8,
freet8,
frere8,
frore8,
ofter8,
overt8,
refer8,
revet8,
rover8,
terfe8,
trove8,
voter8,
retro5,
rotor5,
4 letter words:
erev7,
ever7,
evet7,
evoe7,
feer7,
feet7,
fere7,
fete7,
foot7,
fore7,
fort7,
free7,
fret7,
froe7,
orfe7,
over7,
reef7,
reft7,
roof7,
rove7,
terf7,
tref7,
veer7,
vert7,
veto7,
vote7,
vrot7,
rete4,
root4,
rore4,
rort4,
rote4,
roto4,
teer4,
tore4,
toro4,
torr4,
tree4,
3 letter words:
eft6,
erf6,
eve6,
evo6,
fee6,
fer6,
fet6,
foe6,
for6,
fro6,
oft6,
oof6,
orf6,
ref6,
rev6,
tef6,
vee6,
vet6,
voe6,
vor6,
ere3,
err3,
oor3,
oot3,
ore3,
ort3,
ree3,
reo3,
ret3,
roe3,
roo3,
rot3,
tee3,
toe3,
too3,
tor3,
2 letter words:
ef5,
fe5,
of5,
ee2,
er2,
et2,
oe2,
oo2,
or2,
re2,
te2,
to2,