cccc cccs cccv ccee ccrc ccre ccrs ccss ccvs cec- cece cecs ceec cees cer- cerc cere cers cesc cese cesr cess crcc crce crcr cre- crec cree cres crss cscc csce cscr cscs csec csee cser csrc csrs csse cssr cvcc cver cvrr cvss eccc ecce eces ecrc ecrr ecrv ecsc ecse ecss eecs eeee eees eerc eers eese ercc erce erec erer eres erev errc erre errs erse erve esce escr escs esee eser eses esse ever eves evre evrs evsc rccc rccs rcsc rcss rcvr rcvs recc rece recr recs rees reev rere rers rese ress reve revs rrrr rscc rscs rsee rsre rv-c rver sccc scce sccs scec scee scer scr- scrc scre scrs scsc scsr se-c se-e se-s sec- secc sece secr secs secv seec seer sees serc sere serr sers serv sesc sese sess seve srcc srec sres sscc ssce sscs ssec ssee sses ssrc ssrs sssc ssss svcc svce svcs svec svsc vcrs vecc veer vees ver- vere vers vesc vese vess veve vrse vsee vses vssc vsse vver vvvv