7 letter words:
bebeeru11,
6 letter words:
burble10,
lubber10,
rubble10,
5 letter words:
blurb9,
rebbe9,
bluer7,
rebel7,
rubel7,
ruble7,
4 letter words:
bleb8,
blub8,
bulb8,
burb8,
beer6,
blue6,
blur6,
bree6,
burl6,
lube6,
rube6,
leer4,
lure4,
reel4,
rule4,
3 letter words:
bub7,
ebb7,
bee5,
bel5,
bur5,
reb5,
rub5,
urb5,
eel3,
ere3,
lee3,
leu3,
ree3,
rue3,
2 letter words:
be4,
el2,
er2,
re2,