8 letter words:
burrower13,
6 letter words:
burrow11,
burrer8,
5 letter words:
bower10,
rower8,
borer7,
burro7,
error5,
4 letter words:
brew9,
brow9,
wore7,
bore6,
brrr6,
burr6,
robe6,
rube6,
euro4,
roue4,
ruer4,
3 letter words:
bow8,
web8,
owe6,
row6,
woe6,
bro5,
brr5,
bur5,
obe5,
orb5,
reb5,
rob5,
rub5,
urb5,
err3,
ore3,
our3,
roe3,
rue3,
2 letter words:
ow5,
we5,
wo5,
be4,
bo4,
er2,
oe2,
or2,
re2,