6 letter words:
bursar8,
5 letter words:
buras7,
burrs7,
bursa7,
rubus7,
surra5,
4 letter words:
arbs6,
bars6,
bras6,
bura6,
burr6,
burs6,
rubs6,
suba6,
urbs6,
sura4,
ursa4,
urus4,
3 letter words:
zas12,
abs5,
arb5,
bar5,
bas5,
bra5,
brr5,
bur5,
bus5,
rub5,
sab5,
sub5,
urb5,
ars3,
ras3,
sau3,
2 letter words:
za11,
ab4,
ba4,
ar2,
as2,
us2,