-ene -yne cccc cccf cccs ccee ccfc ccff ccnc ccne ccnf ccnr ccns ccny ccrc ccre ccrf ccrs ccsf ccsn ccss cec- cece cecs ceec cees cef- cefc cefn cen- cene cens ceny cer- cerc cere cerf cern cers cery cesc cese cesr cess ceys cfcf cfcn cfcs cfcy cffr cfnr cfns cfre cfrn cfry cfse cfyn cnes cnrc cnrr cnss crcc crce crcr cre- crec cree cren cres crfc crfs crne crns crss cry- cryn crys cscc csce cscf cscr cscs csec csee cser csfc csfr csne csny csrc csrs csse cssr csys cyc- cycc cycs cyen cyfe cyfs cyn- cyne cyre cyrs cyse cyy- cyyc cyyn eccc ecce ecef eces ecfc ecfr ecfs ecne ecrc ecrf ecrr ecsc ecse ecss eecs eeee eees eefe eefn eens eeny eerc eers eery eese eesy efen efes effs effy ence encs ency enee ener enes eney ennc enne enns enny enrs enry ense enye enys ercc erce erec eren erer eres erfc erfs erne erns errc erre errs erse eryc erye esce escr escs esee esen eser eses esfs esne esse essy esyn eyec eyen eyer eyes eyey eyne eyre eyry eyse eyyr fccf fces fcsc fece feen feer fees fefc fefe feff fene fenn fens feny ferc fere fern ferr fers fery fese fess feyn feyr feys ffcc ffee ffff ffrr ffss fnrs frcc frcn free fren fres frey frfc frns frsc frye frys fscc fsec fssc fssf fyce fyen fyfe fyne fynn fyre fyrs fyry nccc nccf nccn nccr nccs ncec ncee ncef ncen ncer nces ncfc ncfe ncnc ncrc ncre ncsc ncse ncsf ncss ncsy necc nece necr necs necy neef neen neer nees nefe neff nefs nene nens nerc nere nerf nerr ners nery nesc nese nesn nesr ness neye neyf neyn neys nfer nfff nfrs nfsr nfyc nnes nnnn nnss nrcs nren nrfc nrrc nrsc nscc nscs nsec nser nsfc nsfs nsnr nsrc nssc nsse nssf nssr nsss nycc nyce nycy nyen nyer nyes nyne nyny nyrf nysc nyse nysf nyss rccc rccs rcfc rcnr rcsc rcss rcyc recc rece recr recs recy reef reen rees refe reff refn refr refs rene renn rens reny rere rers rery rese resn ress reye reyn reys rfef rffc rncs rrfc rrrr rscc rscn rscs rscy rsee rsfc rsnn rsnr rsre ryen ryes ryfe ryff ryne rynn rysy ryyf sccc scce sccs sccy scec scee scer scey scfc scfe scnr scr- scrc scre scrn scrs scry scsc scsn scsr scye scyn se-c se-e se-f se-n se-s se-y sec- secc sece secn secr secs secy seec seef seen seer sees seey seff sene senn senr sens seny serc sere serf sern serr sers sery sesc sese sess seye seyf seyn seys sfcc sfcs sfer sffc sfne sfrc sfss sncc sncf snee sner snes snns snrs snsy snye snys srcc srec sres srfc srnn sscc ssce sscs ssec ssee sses ssfc ssns ssrc ssrs sssc sssf ssss syce sycr syen syer syes syfe syff syfy syn- sync syne syns syny syre syrs syry syse syss yccc ycee yeen yeer yees yefe yeff yenc yene yens yere yern yerr yers yery yess yeye yeyr ynce ynes ynne yren yrne yryn ysee ysen yser yses ysse yyfe yyff yyyy