-ene -one cccc ccee ccnc ccne ccoc cctc cctt cec- cece ceco cect ceec cen- cene ceno cent cet- cete ceto cexe cnco cnet cnex cntc coce coco coct coen coex con- conc cone conn cono cont coon coot cotc cote cotn coto cott coxe ctec cten ctne ctot cttn cxxx eccc ecce ecco ecct ecne eco- econ ecot ect- ectc ecto eeee eent eeoc eetc eete eext ence enco enee eneo ennc enne eno- enoc enoe enon ent- ente ento eone eont eotc eoto etcc etco etec etee eten etne etoe eton etox ette ettn etto exco exec exen exo- exon exte nccc nccn ncct ncec ncee ncen ncnc ncoc nctc ncte necc nece neco nect neen neet nene neno nent neo- neoc neon neoo neot neox net- nete neto nett nexe nexo next nexx nnnn nnot nntn noce noco noct non- none nonn nono nont nonx noo- noon nooo noot not- note noto nott ntcc ntto o-eo occc occn occt oce ocee ocet ocon oct- octe octo oec- oecc oeec oen- oeno onc- once onco onct one- onec onee oneo onex onne onno onon ont- ontc onto oone oont oooo otee oten oto- otoe oton otoo otte otto oxen oxo- oxon oxox oxxo tccc tcnn tcon tctc teco tect teec teen teet tenc tene tenn teno tent teon tete teto tett tetx text tncc toce toco toee toen toet tone tonn tono toon toot totc tote toto tott tox- toxo toxt ttcn tten tteo ttoe tton tttt txcn txen xcon xen- xene xenn xeno xeon xexe xnee xnet xoco xote xoxo xxxo xxxx