6 letter words:
borzoi17,
5 letter words:
burro7,
4 letter words:
bozo15,
orzo13,
ouzo13,
zori13,
biro6,
birr6,
boor6,
brio6,
broo6,
burr6,
3 letter words:
biz14,
zoo12,
bio5,
boo5,
bro5,
brr5,
bur5,
obi5,
orb5,
rib5,
rob5,
rub5,
urb5,
our3,
2 letter words:
bi4,
bo4,
oi2,
or2,