5 letter words:
burke11,
brume9,
umber9,
4 letter words:
zerk17,
zebu15,
berk10,
kerb10,
merk10,
murk10,
berm8,
bubu8,
burb8,
kuru8,
mure6,
rube6,
3 letter words:
zek16,
bub7,
bum7,
ebb7,
kue7,
uke7,
bur5,
emu5,
reb5,
rem5,
rub5,
rum5,
urb5,
rue3,
2 letter words:
be4,
em4,
me4,
mu4,
um4,
er2,
re2,