5 letter words:
barfs10,
fubar10,
buras7,
bursa7,
4 letter words:
barf9,
fabs9,
fubs9,
arfs7,
furs7,
surf7,
arbs6,
bars6,
bras6,
bura6,
burs6,
rubs6,
suba6,
urbs6,
sura4,
ursa4,
3 letter words:
fab8,
fub8,
arf6,
far6,
fas6,
fur6,
abs5,
arb5,
bar5,
bas5,
bra5,
bur5,
bus5,
rub5,
sab5,
sub5,
urb5,
ars3,
ras3,
sau3,
2 letter words:
fa5,
ab4,
ba4,
ar2,
as2,
us2,