6 letter words:
borzoi17,
5 letter words:
boric9,
4 letter words:
bozo15,
zoic15,
orzo13,
zori13,
crib8,
biro6,
birr6,
boor6,
brio6,
broo6,
coir6,
3 letter words:
biz14,
coz14,
zoo12,
cob7,
bio5,
boo5,
bro5,
brr5,
coo5,
cor5,
obi5,
orb5,
orc5,
rib5,
rob5,
roc5,
2 letter words:
bi4,
bo4,
oi2,
or2,