7 letter words:
refuter10,
6 letter words:
ferrum11,
ferret9,
reefer9,
refute9,
emeute8,
meeter8,
remeet8,
teemer8,
termer8,
ureter6,
5 letter words:
femur10,
fumer10,
fumet10,
freer8,
frere8,
refer8,
emeer7,
merer7,
meter7,
metre7,
murre7,
muter7,
remet7,
retem7,
truer5,
4 letter words:
feme9,
fume9,
feet7,
fere7,
fete7,
free7,
fret7,
reef7,
reft7,
tref7,
turf7,
emeu6,
meet6,
mere6,
mete6,
mure6,
murr6,
mute6,
teem6,
term6,
rete4,
ruer4,
tree4,
true4,
3 letter words:
fem8,
eft6,
fee6,
fer6,
fet6,
feu6,
fur6,
ref6,
eme5,
emu5,
met5,
mut5,
rem5,
rum5,
ere3,
err3,
ree3,
ret3,
rue3,
rut3,
tee3,
ute3,
2 letter words:
ef5,
fe5,
em4,
me4,
mu4,
um4,
er2,
et2,
re2,
ut2,