-ene -yne cccc cccp cccs ccee ccnc ccne ccnp ccnr ccns ccny ccpe ccpn ccpp ccpr ccps ccrc ccre ccrp ccrs ccsn ccsp ccss cec- cece cecp cecs ceec cees cen- cene cens ceny cepc cepe cepp cepr ceps cer- cerc cere cern cerp cers cery cesc cese cesp cesr cess ceys 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 cry- cryn crys cscc csce cscr cscs csec csee csep cser csne csnp csny cspc cspe csps csrc csrs csse cssr csys cyc- cycc cycs cyen cyn- cyne cypc cyps cyre cyrs cyse cyy- cyyc cyyn eccc ecce eces ecne ecpp ecrc ecrr ecsc ecse ecsp ecss eecs eeee eees eens eeny eeps eerc eers eery eese eesy ence encs ency enee ener enes eney ennc enne enns enny enp- enrs enry ense enye enys epcc epec epee epen eper epes epns eppc eppp epps eppy eprp eprs epsc epsp epss ercc erce ercp erec eren erer eres erne erns erpe erps errc erre errs erse eryc erye esce escr escs esee esen eser eses esne espc espe espn espp esps espy esse essp essy esyn eyec eyen eyer eyes eyey eyne eype eyre eyry eyse eyyr nccc nccn nccp nccr nccs ncec ncee ncen ncep ncer nces ncnc ncpc ncrc ncre ncrp ncsc ncse ncss ncsy necc nece necr necs necy neen neep neer nees nene nens nepc nepe nepr neps nerc nere nerr ners nery nesc nese nesn nesr ness neye neyn neys nnes nnnn nnpr nnss npcc npes nppc npss npsy nrcs nren nrpc nrpn nrps nrrc nrsc nrsp nscc nscs nsec nsep nser nsnr nspc nsps nsrc nssc nsse nssp nssr nsss nycc nyce nycy nyen nyer nyes nyne nyny nypc nype nysc nyse nyss pccc pcce pccs pcep pcer pcns pcpn pcpp pcps pcrc pcre pcse pece pecr pecs pecy peec peen peep peer pees pen- penc pene penn pens peny pepe peps per- perc pere pern perp perr pers pery pese pess pesy peyn peyr peys pnec pnes pnpp pnsc ppcc ppcs ppen pper pppn pppp ppps pprc ppss ppye prcc prcp prcs pre- prec pree pren prep pres prey prnp prps prrs prsc prse prss prys psec psnc psnr pspp pspr psps psrp pssc psse psy- psys pyce pyep pyes pyn- pyne pype pypy pyr- pyre pyry pyse pyss rccc rccs rcep rcnr rcps rcsc rcss rcyc recc rece recp recr recs recy reen reep rees rene renn rens reny repe repp repr reps repy rere rers rery rese resn resp ress reye reyn reys rncp rncs rnsp rpcs rppn rpps rpyc rrrr rrsp rscc rscn rscs rscy rsee rsnn rsnr rsps rsre ryen ryes ryne rynn rype rysy sccc scce sccp sccs sccy scec scee scep scer scey scnr scpe scps scr- scrc scre scrn scrs scry scsc scsn scsr scye scyn se-c se-e se-n se-s se-y sec- secc sece secn secr secs secy seec seen seep seer sees seey sene senn senr sens seny sepe sepn sepp sepr seps serc sere sern serp serr sers sery sesc sese sess seye seyn seys sncc sncp snee snep sner snes snns snpp snrs snsy snye snys spcc spcs spec spee spen sper spes spey spne spns spps sprs spry spse spsp spss spy- spyr spys srcc srec sres srnn srpc srps srsp sscc ssce sscp sscs ssec ssee ssep sses ssns sspc sspe ssps ssrc ssrs sssc ssss syce sycr syen syer syes syn- sync syne syns syny sype syre syrs syry syse syss yccc ycee yeen yeep yeer yees yenc yene yens yepe yepp yeps yere yern yerr yers yery yess yeye yeyr ynce ynes ynne ypcc yren yrne yryn ysee ysen yser yses ysnp ysse yyyy