6 letter words:
burble10,
lubber10,
rubble10,
5 letter words:
blurb9,
bluer7,
rubel7,
ruble7,
4 letter words:
buhl9,
buhr9,
herb9,
bleb8,
blub8,
bulb8,
burb8,
herl7,
hurl7,
lehr7,
blue6,
blur6,
burl6,
lube6,
rube6,
lure4,
rule4,
3 letter words:
hub8,
bub7,
ebb7,
her6,
hue6,
bel5,
bur5,
reb5,
rub5,
urb5,
leu3,
rue3,
2 letter words:
eh5,
he5,
uh5,
be4,
el2,
er2,
re2,