6 letter words:
furore9,
burrer8,
5 letter words:
frore8,
furor8,
borer7,
burro7,
error5,
4 letter words:
forb9,
fore7,
four7,
froe7,
bore6,
brrr6,
burr6,
robe6,
rube6,
euro4,
roue4,
ruer4,
3 letter words:
fob8,
fub8,
fer6,
feu6,
foe6,
for6,
fou6,
fro6,
fur6,
ref6,
bro5,
brr5,
bur5,
obe5,
orb5,
reb5,
rob5,
rub5,
urb5,
err3,
ore3,
our3,
roe3,
rue3,
2 letter words:
ef5,
fe5,
of5,
be4,
bo4,
er2,
oe2,
or2,
re2,