c-cor c-p-c c-pop ccccc co-co co-op cocc- cocco cokk- coppo copr- copro coro- corop crock croco crook croop cropc cropo k-p-r k-pop ko-ko kokko kokor korck korop koror korpo korro krock kropp ockro okoc okoro ooooo orcop oroco pcock po-po pocko pocok pocop poopo poork popco popop poppo porco poro- porro prock proor prop- propp propr r-co- ro-ro rocco rocko rocor rokkk rprop