5 letter words:
fubar10,
4 letter words:
barf9,
forb9,
faro7,
fora7,
four7,
boar6,
bora6,
bura6,
3 letter words:
fab8,
fob8,
fub8,
arf6,
far6,
for6,
fou6,
fro6,
fur6,
oaf6,
abo5,
arb5,
bar5,
boa5,
bra5,
bro5,
bur5,
oba5,
orb5,
rob5,
rub5,
urb5,
oar3,
ora3,
our3,
2 letter words:
fa5,
of5,
ab4,
ba4,
bo4,
ar2,
or2,