-ene cccc cccf cccs cccu ccee ccfc ccff ccnc ccne ccnf ccnr ccns ccnu ccrc ccre ccrf ccrs ccsf ccsn ccss ccuc ccus cec- cece cecs ceec cees cef- cefc cefn cen- cene cens cer- cerc cere cerf cern cers cesc cese cesr cess cfcf cfcn cfcs cffr cfnr cfns cfre cfrn cfse cfun cnes cnrc cnrr cnss crcc crce crcr cre- crec cree cren cres creu crfc crfs crne crns crss crue crun crus cscc csce cscf cscr cscs csec csee cser csfc csfr csne csrc csrs csse cssr csuf csur csus cucc cuce cucn cuer cues cufc cuff cune cure curf curn curr curs cuss cusu eccc ecce ecef eces ecfc ecfr ecfs ecne ecrc ecrf ecrr ecru ecsc ecse ecss ecsu ecus eecs eeee eees eefe eefn eens eerc eers eese efen efes effs ence encs enee ener enes ennc enne enns ennu enrs ense ensu enue enuf enur enus ercc erce erec eren erer eres erfc erfs erne erns errc erre errs erse eruc erur erus esce escr escs escu esee esen eser eses esfs esne esse essu esuf esus euer eufc eur- eurc eure euse fccf fces fcsc fece feen feer fees fefc fefe feff fene fenn fens ferc fere fern ferr fers feru fese fess feus ffcc ffee ffff ffrr ffss ffun fnrs fnuf frcc frcn free fren fres frfc frns frsc frue frun fscc fsec fssc fssf fuc- fufc fuff fufu fune funf funs fur- fure furn furr furs fusc fuse fuss fusu nccc nccf nccn nccr nccs nccu ncec ncee ncef ncen ncer nces ncfc ncfe ncnc ncrc ncre ncsc ncse ncsf ncss ncue necc nece necr necs neef neen neer nees nefe neff nefs nene nens nenu nerc nere nerf nerr ners neru nesc nese nesn nesr ness neuc neue neuf neun neur neuu nfcu nfer nfff nfrs nfsr nfsu nnes nnnn nnss nrcs nren nrfc nrrc nrsc nscc nscs nsec nser nsfc nsfs nsnr nsrc nssc nsse nssf nssr nsss nuce nucs nucu nuee nuer nuff nunc nune nunn nuns nurc nure nurn nurr nurs nuru nuse nuss nusu rccc rccs rcfc rcnr rcsc rcss recc rece recr recs recu reef reen rees refe reff refn refr refs refu rene renn rens renu rere rers reru rese resn ress reue reuf reus reuu rfef rffc rncs rrfc rrrr rrun rscc rscn rscs rsee rsfc rsnn rsnr rsre ruce ruen ruer rues rufc rufe ruff runc rune runf runn runs rurc rure rurs ruru ruse russ rusu ruun sccc scce sccs scec scee scer scfc scfe scnr scr- scrc scre scrn scrs scsc scsn scsr scsu scun scur se-c se-e se-f se-n se-s se-u sec- secc sece secn secr secs secu seec seef seen seer sees seeu seff sene senn senr sens serc sere serf sern serr sers seru sesc sese sess seur sfcc sfcs sfer sffc sfne sfrc sfss sfsu sncc sncf snee sner snes snfu snns snrs snur snus srcc srec sres srfc srnn sscc ssce sscs ssec ssee sses ssfc ssns ssrc ssrs sssc sssf ssss suc- succ sucr sucs suee suen suer sues sueu suf- sufc suff sufr sufs sufu sun- sune sunn suns sunu sur- surc sure surf surn surr surs suru sus- suse suss susu suus uces ucrc ucsc ucsf ucsu uers uesn uess ufcu ufer uffe uncc unce uncf uncs unec unee unef unen uner unes unne unns unrf unrs uns- unsc unus ure- ures urfe urff urne urns urre urse urss ursu urun urur urus uscc usce uscf uscs usee usef usen user uses usfc usfs usnc usnr usnu ussc usse ussf ussr usss ussu usun usus uuen uuuu