c-cd cccc cccf cccs ccdc ccdf ccdr ccds cced ccee ccfc ccfd ccff ccrc ccre ccrf ccrs ccsd ccsf ccss cd-e cd-r cdcs cddr cdec cdef cder cdes cdfe cdfs cdre cdrs cdss cec- cece cecs cedd cede ceec cees cef- cefc cer- cerc cerd cere cerf cers cesc cese cesr cess cfcf cfcs cfds cffr cfre cfse crcc crce crcr crdc cre- crec cred cree cres crfc crfs crss cscc cscd csce cscf cscr cscs csdr csec csee cser csfc csfr csrc csrd csrs cssd csse cssr dccc dccs dcds dcfc dcfs dcsc dcss dddd ddes ddrc ddre ddss dec- decc decd dece decs dedd dede deed deef deer dees defe deff defs der- derc dere derf derr ders des- desc dese dess dfcc dfcs dfds dfer dfrf dred dree dref dres drfc drrs dscc dscr dscs dsdr dsfc dsrc dsrr dssc eccc ecce ecdc ecdf eced ecef eces ecfc ecfr ecfs ecrc ecrf ecrr ecsc ecse ecss eddc edde edds ede- eder edes edss eecs eede eeee eees eefe eerc eers eese efes effs ercc erce erde erdf erds erec ered erer eres erfc erfs errc erre errs erse esce escr escs esds esee eser eses esfs esrd esse fccf fcds fces fcsc fece fede feds feed feer fees fefc fefe feff ferc ferd fere ferr fers fese fess ffcc ffee ffff ffrr ffss frcc fred free fres frfc frsc fscc fsec fssc fssf rccc rccs rcdc rcde rcds rcfc rcrd rcsc rcsd rcss rder recc recd rece recr recs redc redd rede redr reds reed reef rees refd refe reff refr refs rerd rere rers rese ress rfds rfef rffc rred rrfc rrrr rscc rscs rsdd rsds rsee rsfc rsre sccc scce sccs scdc scdf scds scec scee scer scfc scfe scr- scrc scre scrs scsc scsd scsr sdcc sddc sdds sdef sder sdes sdfc sdrc sdrs sdsc sdsf sdss se-c se-d se-e se-f se-s sec- secc secd sece secr secs sede seds seec seed seef seer sees seff serc serd sere serf serr sers sesc sese sess sfcc sfcs sfdc sfer sffc sfrc sfss srcc srde srec sres srfc srsd sscc ssce sscs ssdc ssdd ssdf ssec ssee sses ssfc ssrc ssrs sssc sssf ssss