c-cd cccc cccp cccu ccdc ccdp ccoc ccod ccpp ccuc ccup ckck ckco ckcy ckdo ckdu ckoc ckoo ckoy ckpc cock coco cocp cocu codd cody cok- coko coky cood cook coop copd copo copp copy coud couk coup couy coyo cpcu cppd cucc cuck cuk- cupo cupp cuy- cuyo cuyp cyc- cycc cypc cyy- cyyc dc-y dccc dccp dccu dcop dcpo dcup dddd ddoc ddpo dkdc dock doco docu dod- dodd dodo dody doko doky dood dook doop dopo dopp dopy douc doud douk doup douy doyk doyo dpcp dppc dpyd duck duco dudd dudo dudu duku duo- dupo dycd dyck dycu dydd dyko dykp dyku dyo- dyok dyoo dyou kccc kccd kcck kccu kccy kcdc kcdd kcdu kcdy kckc kckk kcko kcky kcou kcpc kcpo kcpu kcuk kcup kcyk kcyy kdcc kdcd kdco kddc kddd kddk kdkd kdkk kdko kdoc kdok kduc kdup kdyk kkcd kkck kkco kkcy kkdc kkdd kkdo kkdy kkkk kkoo kkoy kkpc kkpk kkup kkuu kkyc kkyy kocd kock kocp kodk kodo kodu kody kokc kokk koko kokp koku koky kooc kook kooo koop koou kopp kopu kopy kouu koyo koyy kpcc kpdc kpdo kpkk kpky kpoc kpod kpok kpoo kpop kpou kpoy kppc kppd kppk kppo kppp kpyk kucc kucd kuco kucp kudd kudo kudu kukk kuku kuky kuok kuoo kuop kupd kupu kuuk kuuu kuyo kuyu kuyy kycc kyck kydd kydo kydy kykc kykd kykk kyky kyok kyoo kyoy kyp- kypc kyuk kyuu kyyk kyyo kyyy occc ocpd ocpp oddd oddy odoo odop odou okcu okko okok okpo okyo ooku ooky oooo opo- oppo oppy oucc oudc ouu- oyou pccc pcod pcpp pdcp pdoc pocd pock poco pod- podd podo podu pody poko poku poky pood pook poop pop- popc popo popp popy poud pouk poup pouy poyo ppcc ppcd ppdk ppod pppd pppo pppp puck pudo pudu puku puky puoy pupu pupy puuc puy- puyo pyck pykk pyo- pypy uccp ucdc ucdd ucky udoo udop udpd uduk ukcc ukko ukky ukok ukup ukyo uocc updo uppc uppp uppu uppy upup uucp uuoc uuuu uydo yccc ykko yock yodo yoko yoky yood yook yoop yopo yopy youd youk youp yoyo ypcc yuck yudo yudu yuko yuku yuky yuyu yyyy