5 letter words:
rubby12,
buyer10,
rebuy10,
4 letter words:
brey9,
bury9,
byre9,
ruby9,
burb8,
rube6,
3 letter words:
bey8,
buy8,
bye8,
bub7,
ebb7,
rye6,
uey6,
bru5,
bur5,
reb5,
rub5,
urb5,
rue3,
ure3,
2 letter words:
by7,
ye5,
yu5,
be4,
er2,
re2,
ur2,