-ene cccc cccp cccs ccee ccnc ccne ccnp ccnr ccns ccpe ccpn ccpp ccpr ccps ccrc ccre ccrp ccrs ccsn ccsp ccss cec- cece cecp cecs ceec cees cen- cene cens cepc cepe cepp cepr ceps cer- cerc cere cern cerp cers cesc cese cesp cesr cess cncp cnep cnes cnrc cnrr cnss cpce cpcs cpep cper cpns cpps cpre cprs cpsc cpsr crcc crce crcr cre- crec cree cren crep cres crne crns crpc crps crsp crss cscc csce cscr cscs csec csee csep cser csne csnp cspc cspe csps csrc csrs csse cssr eccc ecce eces ecne ecpp ecrc ecrr ecsc ecse ecsp ecss eecs eeee eees eens eeps eerc eers eese ence encs enee ener enes ennc enne enns enp- enrs ense epcc epec epee epen eper epes epns eppc eppp epps eprp eprs epsc epsp epss ercc erce ercp erec eren erer eres erne erns erpe erps errc erre errs erse esce escr escs esee esen eser eses esne espc espe espn espp esps esse essp nccc nccn nccp nccr nccs ncec ncee ncen ncep ncer nces ncnc ncpc ncrc ncre ncrp ncsc ncse ncss necc nece necr necs neen neep neer nees nene nens nepc nepe nepr neps nerc nere nerr ners nesc nese nesn nesr ness nnes nnnn nnpr nnss npcc npes nppc npss nrcs nren nrpc nrpn nrps nrrc nrsc nrsp nscc nscs nsec nsep nser nsnr nspc nsps nsrc nssc nsse nssp nssr nsss pccc pcce pccs pcep pcer pcns pcpn pcpp pcps pcrc pcre pcse pece pecr pecs peec peen peep peer pees pen- penc pene penn pens pepe peps per- perc pere pern perp perr pers pese pess pnec pnes pnpp pnsc ppcc ppcs ppen pper pppn pppp ppps pprc ppss prcc prcp prcs pre- prec pree pren prep pres prnp prps prrs prsc prse prss psec psnc psnr pspp pspr psps psrp pssc psse rccc rccs rcep rcnr rcps rcsc rcss recc rece recp recr recs reen reep rees rene renn rens repe repp repr reps rere rers rese resn resp ress rncp rncs rnsp rpcs rppn rpps rrrr rrsp rscc rscn rscs rsee rsnn rsnr rsps rsre sccc scce sccp sccs scec scee scep scer scnr scpe scps scr- scrc scre scrn scrs scsc scsn scsr se-c se-e se-n se-s sec- secc sece secn secr secs seec seen seep seer sees sene senn senr sens sepe sepn sepp sepr seps serc sere sern serp serr sers sesc sese sess sncc sncp snee snep sner snes snns snpp snrs spcc spcs spec spee spen sper spes spne spns spps sprs spse spsp spss srcc srec sres srnn srpc srps srsp sscc ssce sscp sscs ssec ssee ssep sses ssns sspc sspe ssps ssrc ssrs sssc ssss