7 letter words:
forever13,
overren10,
6 letter words:
fervor12,
forren9,
froren9,
frorne9,
nerver9,
5 letter words:
fever11,
erven8,
ferer8,
freer8,
freon8,
frere8,
frore8,
frorn8,
nerve8,
never8,
refer8,
roven8,
rover8,
error5,
4 letter words:
eevn7,
erev7,
even7,
ever7,
evoe7,
feen7,
feer7,
fere7,
fern7,
foen7,
fone7,
fore7,
free7,
froe7,
neve7,
orfe7,
oven7,
over7,
reef7,
rove7,
veer7,
erne4,
oner4,
reen4,
rone4,
rore4,
3 letter words:
erf6,
eve6,
evo6,
fee6,
fen6,
fer6,
foe6,
fon6,
for6,
fro6,
nef6,
orf6,
ref6,
rev6,
vee6,
voe6,
vor6,
een3,
ene3,
eon3,
ere3,
ern3,
err3,
nee3,
nor3,
one3,
ore3,
ree3,
ren3,
reo3,
roe3,
2 letter words:
ef5,
fe5,
of5,
ee2,
en2,
er2,
ne2,
no2,
oe2,
on2,
or2,
re2,