c-cd cccc cccm cccu ccdc ccdm ccdn ccdr ccmc ccmd ccmm ccnc ccnm ccnr ccnu ccrc ccuc cd-r cddr cdnc cmcc cmdr cmmc cmmn cmrn cmrr cndd cnrc cnrr crcc crcr crdc crmn crud crum crun cucc cucm cucn cum- cund curd curn curr dccc dccu dcmu dddd ddrc dmcc dmcm dmdc dmrc dnrc drum druu dudd dudu dumm dunc dunn durn duru duur mccc mccd mcdc mcdd mcmc mcrc mcrd mdcc mddm mdmc mdrc mdud mmcc mmcd mmcm mmdc mmmc mmmd mmmm mmrc mmun mndr mr-c mrcc mrdd mrmc mrmd mrnc mrrc mrud muc- mucc mucu mudd mudu mumm mumu munc mund munn munu murc murd murn murr muru nccc nccn nccr nccu ncdc ncdn ncdr ncdu ncmm ncnc ncnd ncrc ndcc ndmc ndrc nmdc nmmc nmrc nnmc nnnn nrdc nrrc nrrd nucu nudc nudd numm numu nunc nunn nurc nurd nurn nurr nuru rccc rcdc rcnr rcrd rdcm rndc rndm rrmc rrrr rrum rrun rudd rumm runc rund runn rurc rurd ruru ruud ruun ucdc ucdd ucmc ucrc udmc udun uncc unmc unmr unum urdu urum urun urur uuuu