6 letter words:
roucou8,
5 letter words:
cocoa9,
occur9,
cruor7,
crura7,
4 letter words:
coca8,
coco8,
croc8,
arco6,
carr6,
cour6,
curr6,
orca6,
orra4,
roar4,
ruru4,
urao4,
3 letter words:
arc5,
car5,
coo5,
cor5,
cru5,
cur5,
oca5,
orc5,
roc5,
ruc5,
oar3,
oor3,
ora3,
our3,
roo3,
2 letter words:
ar2,
oo2,
or2,
ou2,
ur2,