c-cd cccc cccm cccs ccdc ccdm ccdr ccds ccmc ccmd ccmm ccms ccrc ccrs ccsd ccss cd-r cdcs cddr cdms cdrs cdss cmcc cmcs cmdr cmmc cmms cmrr cmrs cmsc crcc crcr crdc crms crss cscc cscd cscr cscs csdr csmc csrc csrd csrs cssd cssm cssr dccc dccs dcds dcms dcsc dcss dddd ddrc ddss dmcc dmcm dmcs dmdc dmds dmrc dmss drms drrs dscc dscr dscs dsdm dsdr dsmc dsms dsrc dsrr dssc mccc mccd mcdc mcdd mcmc mcrc mcrd mcsd mcss mdcc mddm mdds mdmc mdrc mdsd mmcc mmcd mmcm mmcs mmdc mmds mmmc mmmd mmmm mmms mmrc mmsc mmsd mr-c mrcc mrcs mrdd mrds mrmc mrmd mrrc mrsc mrsd mscc msdc msmc msmm msms mssm mssr rccc rccs rcdc rcds rcms rcrd rcsc rcsd rcss rdcm rdms rmsc rrmc rrrr rscc rscs rsdd rsds sccc sccm sccs scdc scds scmc scmm scms scr- scrc scrs scsc scsd scsr sdcc sddc sdds sdms sdrc sdrs sdsc sdsm sdss smcc smdc smdr smsc smsd smss srcc srmc srsd sscc sscs ssdc ssdd ssdm ssmc ssrc ssrm ssrs sssc sssm ssss