- cirri
- cocci
- cock
- cocking
- cocoon
- cocooning
- coin
- coining
- coir
- conic
- conk
- conking
- conning
- cooing
- cook
- cooking
- corgi
- coring
- cork
- corking
- corn
- crick
- cricking
- cringing
- croc
- croci
- crock
- crook
- crooking
- croon
- crooning
- icing
- icon
- iconic
- ionic
- ironic
- kick
- kicking
- knock
- knocking
- nick
- nicking
- nock
- nocking
- ricin
- ricing
- rick
- rock
- rocking
- rococo