7 letter words:
crumber13,
6 letter words:
cherub13,
cumber12,
curber10,
5 letter words:
buchu12,
merch12,
rhumb12,
crumb11,
churr10,
rheum10,
ruche10,
brume9,
cuber9,
umber9,
umbre9,
curer7,
murre7,
recur7,
4 letter words:
chub11,
chum11,
much11,
buhr9,
cher9,
herb9,
herm9,
berm8,
crem8,
cube8,
curb8,
merc8,
huer7,
brer6,
burr6,
crue6,
cure6,
curr6,
ecru6,
mure6,
murr6,
rube6,
rume6,
ruer4,
ruru4,
3 letter words:
che8,
ech8,
hem8,
hub8,
hum8,
bum7,
cub7,
cum7,
her6,
hue6,
reh6,
brr5,
bru5,
bur5,
cru5,
cue5,
cur5,
ecu5,
emu5,
meu5,
reb5,
rec5,
rem5,
rub5,
ruc5,
rum5,
umu5,
urb5,
err3,
rue3,
ure3,
2 letter words:
ch7,
hm7,
eh5,
he5,
uh5,
be4,
em4,
me4,
mu4,
um4,
er2,
re2,
ur2,