cccc cccf cccs cccu ccee ccfc ccff ccrc ccre ccrf ccrs ccsf ccss ccuc ccus cec- cece cecs ceec cees cef- cefc cer- cerc cere cerf cers cesc cese cesr cess cfcf cfcs cffr cfre cfse crcc crce crcr cre- crec cree cres creu crfc crfs crss crue crus cscc csce cscf cscr cscs csec csee cser csfc csfr csrc csrs csse cssr csuf csur csus cucc cuce cuer cues cufc cuff cure curf curr curs cuss cusu eccc ecce ecef eces ecfc ecfr ecfs ecrc ecrf ecrr ecru ecsc ecse ecss ecsu ecus eecs eeee eees eefe eerc eers eese efes effs ercc erce erec erer eres erfc erfs errc erre errs erse eruc erur erus esce escr escs escu esee eser eses esfs esse essu esuf esus euer eufc eur- eurc eure euse fccf fces fcsc fece feer fees fefc fefe feff ferc fere ferr fers feru fese fess feus ffcc ffee ffff ffrr ffss frcc free fres frfc frsc frue fscc fsec fssc fssf fuc- fufc fuff fufu fur- fure furr furs fusc fuse fuss fusu rccc rccs rcfc rcsc rcss recc rece recr recs recu reef rees refe reff refr refs refu rere rers reru rese ress reue reuf reus reuu rfef rffc rrfc rrrr rscc rscs rsee rsfc rsre ruce ruer rues rufc rufe ruff rurc rure rurs ruru ruse russ rusu sccc scce sccs scec scee scer scfc scfe scr- scrc scre scrs scsc scsr scsu scur se-c se-e se-f se-s se-u sec- secc sece secr secs secu seec seef seer sees seeu seff serc sere serf serr sers seru sesc sese sess seur sfcc sfcs sfer sffc sfrc sfss sfsu srcc srec sres srfc sscc ssce sscs ssec ssee sses ssfc ssrc ssrs sssc sssf ssss suc- succ sucr sucs suee suer sues sueu suf- sufc suff sufr sufs sufu sur- surc sure surf surr surs suru sus- suse suss susu suus uces ucrc ucsc ucsf ucsu uers uess ufcu ufer uffe ure- ures urfe urff urre urse urss ursu urur urus uscc usce uscf uscs usee usef user uses usfc usfs ussc usse ussf ussr usss ussu usus uuuu