-ene -one cccc cccp ccee ccnc ccne ccnp ccnr ccoc ccpe ccpn ccpp ccpr ccrc ccre ccrp ccrt cctc cctt cec- cece ceco cecp cect ceec cen- cene ceno cent ceop ceor cepc cepe cepo cepp cepr cept cer- cerc cere cern cero cerp cert cet- cete ceto cetp cnco cncp cnep cnet cnrc cnrr cnrt cntc cntr coce coco cocp coct coen coep con- conc cone conn cono cont coon coop coot cope copo copp copr copt cor- corc core corn coro corp corr cort cotc cote cotn coto cott cpce cpep cper cpnt cpre cprt cptp cptr crcc crce crcr cre- crec cree cren creo crep cret crne croc croe cron croo crop cror crot crpc crrt crtc crtp ctcp ctec cten ctep ctne ctor ctot ctpo ctpp ctrc ctrn ctrp cttn eccc ecce ecco ecct ecne eco- econ ecop ecot ecpp ecrc ecrr ect- ectc ecto eeee eent eeoc eerc eero eetc eete ence enco enee eneo ener ennc enne eno- enoc enoe enon enp- ent- ente ento entp entr eone eont eore eotc eoto epcc epec epee epen eper epoc epon epor epot eppc eppo eppp epro eprp epte ercc erce ercp erec eren erer eret erne erno eroc eroe eron eroo erpe errc erre erro etcc etco etec etee eten eter etne etnr etoe eton etre etro ette ettn etto nccc nccn nccp nccr ncct ncec ncee ncen ncep ncer ncnc ncoc ncor ncpc ncrc ncre ncrp nctc ncte nctr necc nece neco necr nect neen neep neer neet nene neno nent neo- neoc neon neoo neot nepc nepe nepr nept nerc nere nero nerr nert net- nete neto nett nnnn nnot nnpr nntn noce noco noct noer non- none nonn nono nont noo- noon nooo noop noor noot nope nor- norc nore norn noro norr nort not- note noto nott npcc nppc nprt nptc npte nptn nren nroc nron nrpc nrpn nrrc ntcc nter ntop ntpc ntrc ntto nttr o-eo occc occn occt oce ocee ocet ocon ocpp ocre ocro ocrr oct- octe octo oec- oecc oeec oen- oeno oere onc- once onco onct one- onec onee oneo onep oner onne onno onon onor onpt ont- ontc onto oocr ooer oone oont oooo oore oort ootp opec open opep oper opet opo- opon opor oppo optn opto orce orco ore- orec oren oreo orer ornc orne orno oro- oroe oron oror orot orpc orpe orro ortc orte orto otee oten otep oter oto- otoe oton otoo otor otpp otre otro otte otto pccc pcce pcep pcer pcnt pcoe pcpn pcpp pcrc pcre pcte pece peco pecr pect peec peen peep peer peet pen- penc pene penn peno pent peon peor pepe pepo per- perc pere pern pero perp perr pert pete petn peto petr pett pnec pnet pnon pnot pnpo pnpp pnro pntr poce poco poer poet ponc pone pono ponp pont poon poop poor poot pop- popc pope popo popp popt porc pore porn poro porr port potc pote poto pott ppcc ppen pper pppn pppo pppp pprc pptn pptt prcc prcp pre- prec pree pren prep pret prnp pro- proc proe pron proo prop prot prtc prtp prtr ptcc pten pter ptop pttc rccc rcep rcet rcnr rcon rcpo rcpt rctc recc rece recp recr rect reen reep reet rene renn reno rent reop reot repe repo repp repr rept rere rero rert rete reto retr rett rnco rncp rnnt rnot rntp rocc roce roco roen roer roet ronc rone rono ront roon roop roor root rope ropo rorc rore roro rort rotc rote rotn roto rotr rott rpet rpoe rpon rppn rptn rrrr rtcc rtce rtee rttp tccc tcep tcnn tcon tcpo tctc teco tecr tect teec teen teer teet tenc tene tenn teno tenp tent teon teor tepe tepp ter- terc tere tern tero terp terr tete teto tetr tett tncc toce toco toee toen toer toet tone tonn tono toon toor toot top- tope topo topp topt torc tore torn toro torp torr tort totc tote toto totr tott tpcp tper tpon tppp tppr tpte tptp tptr trcc tre- trec tree tren treo tret trno troc troe tron troo trop trot trpc trpe trpn trpp trtc trte trtr ttcn ttcp tten tteo tter ttoe tton ttop tttt