5 letter words:
circa9,
cocoa9,
craic9,
croci9,
coria7,
4 letter words:
coca8,
coco8,
croc8,
arco6,
ciao6,
coir6,
orca6,
3 letter words:
arc5,
car5,
coo5,
cor5,
oca5,
orc5,
roc5,
air3,
oar3,
oor3,
ora3,
rai3,
ria3,
roo3,
2 letter words:
ai2,
ar2,
io2,
oi2,
oo2,
or2,