6 letter words:
ferret9,
retore6,
5 letter words:
ferer8,
fetor8,
forte8,
freer8,
freet8,
frere8,
frore8,
ofter8,
refer8,
terfe8,
retro5,
4 letter words:
feer7,
feet7,
fere7,
fete7,
fore7,
fort7,
free7,
fret7,
froe7,
orfe7,
reef7,
reft7,
terf7,
tref7,
rete4,
rore4,
rort4,
rote4,
teer4,
tore4,
torr4,
tree4,
3 letter words:
eft6,
erf6,
fee6,
fer6,
fet6,
foe6,
for6,
fro6,
oft6,
orf6,
ref6,
tef6,
ere3,
err3,
ore3,
ort3,
ree3,
reo3,
ret3,
roe3,
rot3,
tee3,
toe3,
tor3,
2 letter words:
ef5,
fe5,
of5,
ee2,
er2,
et2,
oe2,
or2,
re2,
te2,
to2,