7 letter words:
fuehrer13,
ferrule10,
6 letter words:
fuhrer12,
ferrel9,
ferule9,
fueler9,
furler9,
hurler9,
refuel9,
burler8,
5 letter words:
fleer8,
freer8,
frere8,
refel8,
refer8,
bluer7,
rebel7,
rubel7,
ruble7,
lurer5,
ruler5,
4 letter words:
beef9,
buhl9,
buhr9,
feeb9,
flub9,
hebe9,
herb9,
feel7,
fere7,
flee7,
flue7,
free7,
fuel7,
furl7,
heel7,
here7,
herl7,
hurl7,
lehr7,
reef7,
beer6,
blue6,
blur6,
bree6,
burl6,
burr6,
lube6,
rube6,
leer4,
lure4,
reel4,
ruer4,
rule4,
3 letter words:
feh9,
fub8,
hub8,
elf6,
fee6,
fer6,
feu6,
flu6,
fur6,
her6,
hue6,
ref6,
bee5,
bel5,
brr5,
bur5,
reb5,
rub5,
urb5,
eel3,
ere3,
err3,
lee3,
leu3,
ree3,
rue3,
2 letter words:
ef5,
eh5,
fe5,
he5,
uh5,
be4,
el2,
er2,
re2,