9 letter words:
prenumber15,
8 letter words:
numberer12,
renumber12,
7 letter words:
premune11,
umbrere11,
6 letter words:
bumper12,
burpee10,
embrue10,
number10,
premen10,
beurre8,
burner8,
murree8,
murren8,
pruner8,
repure8,
5 letter words:
berme9,
breem9,
breme9,
brume9,
ember9,
neemb9,
umber9,
umbre9,
breer7,
brere7,
emure7,
merer7,
murre7,
neper7,
neume7,
preen7,
prune7,
puree7,
purer7,
remen7,
rumen7,
rupee7,
enure5,
rerun5,
4 letter words:
bump10,
beep8,
berm8,
burp8,
numb8,
perm8,
prem8,
pube8,
rump8,
been6,
beer6,
bene6,
bere6,
bree6,
bren6,
brer6,
burn6,
burr6,
emeu6,
meer6,
mene6,
menu6,
mere6,
mure6,
murr6,
neem6,
neep6,
neum6,
peen6,
peer6,
pene6,
pere6,
pern6,
pree6,
puer6,
pure6,
purr6,
rube6,
rume6,
rurp6,
unbe6,
erne4,
nurr4,
reen4,
ruer4,
rune4,
3 letter words:
bum7,
pub7,
ump7,
bee5,
ben5,
brr5,
bru5,
bun5,
bur5,
eme5,
emu5,
mee5,
men5,
meu5,
mun5,
neb5,
nep5,
nub5,
pee5,
pen5,
per5,
pre5,
pun5,
pur5,
reb5,
rem5,
rep5,
rub5,
rum5,
urb5,
urp5,
een3,
ene3,
ere3,
ern3,
err3,
nee3,
nur3,
ree3,
ren3,
rue3,
run3,
ure3,
urn3,
2 letter words:
be4,
em4,
me4,
mu4,
pe4,
um4,
up4,
ee2,
en2,
er2,
ne2,
nu2,
re2,
un2,
ur2,