ceecee cerco- ceruce cocco- cockee cocker cococo coerce coo-er coocoo cookee cooker cookoo corker corour correk coruco coruro coucke cource courr- crecco creeke crocco crocer croker crooke crouke cruro- cuckoo curour currer curror cururo ekero errour eureko eururo k-rock keeker keokee keokuk kereru kerker kerkuk kerou keuruu kokoku kokoro kookoo koreke korere korero korkor kororo korrek koruru kouere koukou kouoro kourou krecko kreker krokek krueck kukere kukoc kurkcu kuroko kurree kururu occour occure ockere ocreo- okerer okoure ookroo oooooo orcure orrock orrour ouerre recock recook recore recork recour recreo recrue recuer recure reeker reuere reuour rocker rococo rokker rokkor rokuko rokuro rooker rorek roucou rourke rucker ruocco rurkee uecker urecco urouer uroure