9 letter words:
rubberier13,
7 letter words:
burrier9,
6 letter words:
bribee10,
briber10,
ribber10,
rubber10,
burier8,
burrer8,
rubier8,
5 letter words:
bribe9,
rebbe9,
brier7,
4 letter words:
burb8,
beer6,
bier6,
birr6,
bree6,
brie6,
brrr6,
burr6,
rube6,
ruer4,
3 letter words:
bib7,
bub7,
ebb7,
bee5,
brr5,
bur5,
reb5,
rib5,
rub5,
urb5,
ere3,
err3,
ire3,
ree3,
rei3,
rue3,
2 letter words:
be4,
bi4,
er2,
re2,