6 letter words:
number10,
burner8,
murren8,
5 letter words:
brume9,
umber9,
umbre9,
murre7,
rumen7,
rerun5,
4 letter words:
berm8,
numb8,
bren6,
brer6,
burn6,
burr6,
menu6,
mure6,
murr6,
neum6,
rube6,
rume6,
unbe6,
nurr4,
ruer4,
rune4,
3 letter words:
bum7,
ben5,
brr5,
bru5,
bun5,
bur5,
emu5,
men5,
meu5,
mun5,
neb5,
nub5,
reb5,
rem5,
rub5,
rum5,
urb5,
ern3,
err3,
nur3,
ren3,
rue3,
run3,
ure3,
urn3,
2 letter words:
be4,
em4,
me4,
mu4,
um4,
en2,
er2,
ne2,
nu2,
re2,
un2,
ur2,