6 letter words:
hefter12,
5 letter words:
hefte11,
ether8,
freet8,
terfe8,
there8,
three8,
4 letter words:
heft10,
ethe7,
feer7,
feet7,
fere7,
fete7,
free7,
fret7,
here7,
hete7,
reef7,
reft7,
tehr7,
terf7,
thee7,
tref7,
rete4,
teer4,
tree4,
3 letter words:
feh9,
eft6,
erf6,
eth6,
fee6,
fer6,
fet6,
her6,
het6,
ref6,
reh6,
tef6,
the6,
ere3,
ree3,
ret3,
tee3,
2 letter words:
ef5,
eh5,
fe5,
he5,
ee2,
er2,
et2,
re2,
te2,