cccc cccl cccp cclc ccoc ccpl ccpp cloo clop cloy clpp cly- coco cocp col- coll colo colp coly cool coop copo copp copy coyl coyo cplc cyc- cycc cycl cyl- cylc cyll cypc cyy- cyyc lccc lcpc lcpl llcc lllc llll lloc lloo locc loco loll lolo loly looc lool loop lopp lppl lyc- lyco lyly lyo- occc oclc ocpp olcc ollo olly olpc oolo oooo opo- oppo oppy oyly pccc pccl pcll pclo pcpp plcc ploc ploo plop ploy plpp poco poll polo poly pool poop pop- popc popo popp popy poyo ppcc pplo pppo pppp pyl- pyll pyo- pypy yccc yoll yolo yolp yoly yool yoop yopo yopy yoyo ypcc yyyy