6 letter words:
ruboff14,
5 letter words:
buffo13,
4 letter words:
boff12,
buff12,
ruff10,
bufo9,
forb9,
four7,
3 letter words:
off9,
fob8,
fub8,
for6,
fou6,
fro6,
fur6,
orf6,
ufo6,
bor5,
bro5,
bru5,
bur5,
orb5,
rob5,
rub5,
urb5,
our3,
2 letter words:
of5,
bo4,
ob4,
or2,
ou2,
ur2,