cccc cccm ccee ccmc ccmm ccrc ccre ccrt cctc cctt cec- cece cecm cect ceec ceem ceme cemm cemr cer- cerc cere cert cet- cete cmcc cmec cmmc cmrr cmtc crcc crce crcr cre- crec cree crem cret crrt crtc crtm ctec ctrc ctrm eccc ecce eccm ecct ecem ecrc ecrm ecrr ect- ectc eeee eerc eetc eete emcc emer emet emme emre emte ercc erce erec erem erer eret ermc erme errc erre etcc etec etee etem eter etre etrm ette mccc mcmc mcmt mcrc mctc mec- mecc mece mecr meem meer meet memc meme memr mer- merc mere merm mert met- mete mett mmcc mmcm mmct mmmc mmmm mmrc mr-c mrcc mrce mree mrmc mrrc mrtm mrtt mtcr mtrc mtre mtrr mttr rccc rcet rctc recc rece recm recr rect reem reet reme rere rert rete retr rett rrmc rrrr rtcc rtce rtcm rtee rtmc tccc tctc tecr tect teec teem teer teet teme ter- terc tere term terr tete tetr tett tmcc tmcm tmtt trcc tre- trec tree trem tret trtc trte trtr tter tttt