-ene -one cccc cccl cccp ccee ccel cclc ccnc ccne ccnp ccoc ccpe ccpl ccpn ccpp cec- cece ceco cecp ceec ceel cel- celc cele cell celo cen- cene ceno ceol ceop cepc cepe cepo cepp clec clee cleo clep cloe clon cloo clop clpp cnco cncp cnel cnep coce coco cocp coel coen coep col- cole coll coln colo colp con- conc cone conn cono cool coon coop cope copo copp cpce cpep cplc e-cl eccc ecce eccl ecco ecne eco- ecol econ ecop ecpp eeee eele eeoc el-p elce elco elec elee elen eleo elle ello elne elon elpe ence encl enco enee enel eneo ennc enne eno- enoc enoe enol enon enp- eole eolo eone epcc epec epee epen eple epll epln epoc epol epon eppc eppo eppp lccc lcce lcpc lcpl lece leco leel leen leep lele lell lelo lene lenn leno leoc leon lepe lepo lepp llcc lllc llll lloc lloo locc loce locn loco loen lole loll lolo lone lono looc looe lool loon loop lope lopp lpec lppl nccc nccn nccp ncec ncee ncel ncen ncep nclc ncln ncnc ncoc ncpc necc nece neco neel neen neep nelc nele nell nelo nene neno neo- neoc neol neon neoo nepc nepe nlcc nlec nlpc nnnn noce nocl noco noel nole noll nolo nolp non- none nonn nono noo- nool noon nooo noop nope npcc nppc nppl o-eo occc occn oce ocee oclc ocon ocpp oec- oecc oeec oele oen- oeno olcc ole- olen oleo olle ollo olne olon olpc olpe onc- once onco one- onec onee onel oneo onep onne onno onon oolo oone oooo opec opel open opep ople opo- opon oppo pccc pcce pccl pcep pcll pclo pcoe pcpn pcpp pece pecl peco peec peel peen peep pel- pele pell pelo pen- penc pene penn peno peon pepe pepo plcc plce ple- plec plee plen pleo ploc plon ploo plop plpp pnec pnln pnnl pnon pnpo pnpp poce poco poel pole poll polo ponc pone pono ponp pool poon poop pop- popc pope popo popp ppcc ppen pple pplo pppn pppo pppp