-ene -one cccc cccf cccl ccee ccel ccfc ccff ccfl cclc cclx ccnc ccne ccnf ccoc ccxl cec- cece ceco ceec ceel cef- cefc cefn cel- celc cele celf cell celo cen- cene ceno ceol cexe cfcf cfcl cfcn cfco cfln cfox clec clee clef cleo cloe clof clon cloo clox clxx cnco cnel cnex coce coco coel coen coex cofc cofe coff col- cole coll coln colo con- conc cone conf conn cono coof cool coon coxe cxxx e-cl eccc ecce eccl ecco ecef ecfc ecne eco- ecol econ eeee eefe eefl eefn eele eeoc efco efen efeo efon elce elco elec elee elef elen eleo elex elfc elfe elle ello elne elon ence encl enco enee enel eneo ennc enne eno- enoc enoe enol enon eole eolo eone excl exco exec exel exen exfo exo- exon fccf fcnl fece feel feen fefc fefe feff fefo fele felf fell felo fene fenn feof feon ffcc ffee ffff flcl flee flen flex flnc floc floe flon floo flox fnlc foce foco fofo folc fole foll folo folx fone fono foof fool foon foxe foxx lccc lcce lcfc lece leco leef leel leen lefe leff lele lell lelo lene lenn leno leoc leof leon leox lexx lfcc llcc llef lllc llll lloc lloo locc loce locn loco loen lofe loff lofn lole loll lolo lone lono looc looe loof lool loon lox- loxo lxxx nccc nccf nccn ncec ncee ncef ncel ncen ncfc ncfe nclc ncln ncnc ncoc necc nece neco neef neel neen nefe neff nefl nelc nele nelf nell nelo nene neno neo- neoc neol neon neoo neox nexe nexo nexx nfff nfon nlcc nlcf nlec nnnn noce nocl noco noel nofx nole nolf noll nolo non- none nonn nono nonx noo- nool noon nooo o-eo occc occn oce ocee ocef oclc ocon oec- oecc oeec oele oen- oeno ofcl ofen off- offc offe offo ofno olcc ole- olef olen oleo olfe olle ollo olne olof olon onc- once oncf onco one- onec onee onel oneo onex onlf onne onno onon ooff oolo oone oooo oxen oxo- oxof oxon oxox oxxo xcel xcon xefe xen- xene xenn xeno xeon xexe xfce xloc xlox xnee xoco xolo xoxo xxxo xxxx