5 letter words:
courb9,
4 letter words:
zobu15,
juco13,
jour11,
curb8,
cour6,
3 letter words:
coz14,
cuz14,
job12,
jor10,
cob7,
cub7,
bor5,
bro5,
bru5,
bur5,
cor5,
cru5,
cur5,
orb5,
orc5,
rob5,
roc5,
rub5,
ruc5,
urb5,
our3,
2 letter words:
zo11,
jo9,
bo4,
ob4,
or2,
ou2,
ur2,