7 letter words:
krubuts13,
6 letter words:
krubut12,
5 letter words:
brusk11,
burks11,
kurus9,
kutus9,
turks9,
brust7,
bruts7,
burst7,
rubus7,
4 letter words:
burk10,
busk10,
kuru8,
kutu8,
rusk8,
turk8,
tusk8,
brus6,
brut6,
burs6,
bust6,
buts6,
rubs6,
stub6,
tubs6,
urbs6,
rust4,
ruts4,
urus4,
utus4,
3 letter words:
suk7,
tsk7,
bru5,
bur5,
bus5,
but5,
rub5,
sub5,
tub5,
urb5,
rut3,
sur3,
uts3,
utu3,
2 letter words:
st2,
ur2,
us2,
ut2,
