9 letter words:
therefore15,
8 letter words:
therefor14,
7 letter words:
frother13,
thereof13,
6 letter words:
hefter12,
hereof12,
ferret9,
hereto9,
hetero9,
reefer9,
rhetor9,
retore6,
5 letter words:
forth11,
froth11,
ether8,
fetor8,
forte8,
freer8,
frere8,
frore8,
ofter8,
other8,
refer8,
there8,
three8,
throe8,
retro5,
4 letter words:
heft10,
feet7,
fere7,
fete7,
fore7,
fort7,
free7,
fret7,
froe7,
here7,
hero7,
hoer7,
reef7,
reft7,
thee7,
thro7,
tref7,
rete4,
rote4,
tore4,
torr4,
tree4,
3 letter words:
feh9,
foh9,
eft6,
eth6,
fee6,
fer6,
fet6,
foe6,
for6,
fro6,
her6,
het6,
hoe6,
hot6,
oft6,
ref6,
rho6,
the6,
tho6,
ere3,
err3,
ore3,
ort3,
ree3,
ret3,
roe3,
rot3,
tee3,
toe3,
tor3,
2 letter words:
ef5,
eh5,
fe5,
he5,
ho5,
of5,
oh5,
er2,
et2,
oe2,
or2,
re2,
to2,
