cccc cccl cccp cccu cclc ccoc ccpl ccpp ccuc ccup cloo clop clou cloy clpp cly- coco cocp cocu col- coll colo colp colu coly cool coop copo copp copy coul coup couy coyl coyo cpcu cplc cucc culc cull culo culp cupl cupo cupp cuy- cuyl cuyo cuyp cyc- cycc cycl cyl- cylc cyll cypc cyul cyy- cyyc lccc lcpc lcpl llcc lllc llll lloc lloo locc loco locu loll lolo loly looc lool loop lopp lopu loul loup louu lppl lucy lull lulu lupo lupu luup lyc- lyco lyly lyo- occc oclc ocpp ocul olcc ollo olly olpc oolo oooo opo- oppo oppy oucc oulu ouu- oyly oyou pccc pccl pcll pclo pcpp plcc ploc ploo plop plou ploy plpp plup poco poll polo polu poly pool poop pop- popc popo popp popy poul poup pouy poyo ppcc pplo pppo pppp pull pulo pulp pulu puly puoy pupl pupu pupy puuc puy- puyo pyl- pyll pyo- pypy uccp ulcc ulco ullo ully ulo- uloc ulul uocc uolc uplo uppc uppp uppu uppy upup uucp uulu uuoc uuuu yccc yoll yolo yolp yoly yool yoop yopo yopy youl youp yoyo ypcc yulo yulu yuyu yyyy