7 letter words:
rubbers11,
6 letter words:
rubber10,
5 letter words:
burbs9,
burrs7,
burse7,
rebus7,
rubes7,
suber7,
ruers5,
surer5,
4 letter words:
bubs8,
burb8,
ebbs8,
burr6,
burs6,
rebs6,
rube6,
rubs6,
urbs6,
errs4,
ruer4,
rues4,
ruse4,
suer4,
sure4,
user4,
3 letter words:
bub7,
ebb7,
bes5,
brr5,
bur5,
bus5,
reb5,
rub5,
sub5,
urb5,
err3,
ers3,
res3,
rue3,
ser3,
sue3,
use3,
2 letter words:
be4,
er2,
es2,
re2,
us2,
