5 letter words:
brusk11,
bunks11,
knurs9,
kurus9,
burns7,
rubus7,
4 letter words:
bunk10,
busk10,
knur8,
kuru8,
rusk8,
sunk8,
buns6,
burn6,
burs6,
nubs6,
rubs6,
snub6,
urbs6,
runs4,
urns4,
urus4,
3 letter words:
suk7,
bun5,
bur5,
bus5,
nub5,
rub5,
sub5,
urb5,
nus3,
run3,
sun3,
uns3,
urn3,
2 letter words:
nu2,
un2,
us2,