7 letter words:
further13,
6 letter words:
fuhrer12,
future9,
hurter9,
5 letter words:
berth10,
brute7,
buret7,
rebut7,
tuber7,
truer5,
4 letter words:
heft10,
beth9,
bhut9,
buhr9,
herb9,
fret7,
hurt7,
reft7,
ruth7,
thru7,
tref7,
turf7,
brut6,
burr6,
bute6,
rube6,
tube6,
ruer4,
true4,
3 letter words:
feh9,
fub8,
hub8,
eft6,
eth6,
fer6,
fet6,
feu6,
fur6,
her6,
het6,
hue6,
hut6,
ref6,
the6,
bet5,
brr5,
bur5,
but5,
reb5,
rub5,
tub5,
urb5,
err3,
ret3,
rue3,
rut3,
ute3,
2 letter words:
ef5,
eh5,
fe5,
he5,
uh5,
be4,
er2,
et2,
re2,
ut2,