6 letter words:
birkie12,
5 letter words:
biker11,
bikie11,
burke11,
kibei11,
krubi11,
4 letter words:
berk10,
bike10,
birk10,
kerb10,
kibe10,
keir8,
kier8,
bier6,
brie6,
rube6,
3 letter words:
irk7,
kir7,
kue7,
uke7,
bur5,
reb5,
rib5,
rub5,
urb5,
ire3,
rei3,
rue3,
2 letter words:
ki6,
be4,
bi4,
er2,
re2,