6 letter words:
bunker12,
5 letter words:
burke11,
4 letter words:
berk10,
bunk10,
kerb10,
kern8,
knur8,
kune8,
neuk8,
nuke8,
bren6,
burn6,
rube6,
unbe6,
rune4,
3 letter words:
ken7,
kue7,
uke7,
ben5,
bun5,
bur5,
neb5,
nub5,
reb5,
rub5,
urb5,
ern3,
rue3,
run3,
urn3,
2 letter words:
be4,
en2,
er2,
ne2,
nu2,
re2,
un2,