7 letter words:
clumber13,
crumble13,
6 letter words:
cumber12,
lumber10,
rumble10,
5 letter words:
crumb11,
blume9,
brume9,
cuber9,
umbel9,
umber9,
bluer7,
cruel7,
lemur7,
lucre7,
rubel7,
ruble7,
ulcer7,
4 letter words:
berm8,
club8,
cube8,
culm8,
curb8,
merc8,
blue6,
blur6,
burl6,
clue6,
cure6,
curl6,
ecru6,
lube6,
luce6,
merl6,
mule6,
mure6,
rube6,
lure4,
rule4,
3 letter words:
bum7,
cub7,
cum7,
bel5,
bur5,
cel5,
cru5,
cue5,
cur5,
ecu5,
elm5,
emu5,
lum5,
mel5,
reb5,
rec5,
rem5,
rub5,
rum5,
urb5,
leu3,
rue3,
2 letter words:
be4,
em4,
me4,
mu4,
um4,
el2,
er2,
re2,
