-ene -one cccc cccp ccee ccgc ccnc ccne ccnp ccnr ccoc ccpe ccpn ccpp ccpr ccrc ccre ccrg ccrp cec- cece ceco cecp ceec cege cego cen- cene ceng ceno ceop ceor cepc cepe cepo cepp cepr cer- cerc cere cern cero cerp cgcc cgcg cger cgro cnco cncp cnep cnrc cnrr coce coco cocp coen coep cogo con- conc cone cong conn cono coon coop cope copg copo copp copr cor- corc core corg corn coro corp corr cpce cpep cper cpre crcc crce crcr cre- crec cree creg cren creo crep crne croc croe cron croo crop cror crpc eccc ecce ecco ecne eco- ecog econ ecop ecpg ecpp ecrc ecrr eeee eeng eeoc eerc eerg eero egcc egcg egcr egec egee eger egge eggo eggp egne ego- egon egor egpe egpn egpo egre ence enco enee eneg eneo ener enge engg engo engr ennc enne eno- enoc enoe enon enp- eone eore epcc epec epee epen eper epoc epon epor eppc eppo eppp epro eprp ercc erce ercp erec eren erer erg- ergg ergo erne erno eroc eroe eron eroo erpe errc erre erro gc-c gccc gcpc gcrg gece geen geep geer gege gegg gego gen- genc gene geng genn geno geo- geog geon gepe gere gern gero gggg ggpo ggrn gncc gngc gnoo gnpc gnrc gnrr goce gocr goen goer gogo gon- gone gong gonn gono goog goon goop goor gopc gope gopo gore gorg gorn goro gorp gorr gper gpgp gprp grcc grce grec gree greg gren grep groc grog gron groo grop gror grpc grrr nccc nccn nccp nccr ncec ncee ncen ncep ncer ncgr ncnc ncoc ncor ncpc ncrc ncre ncrp necc nece neco necr neen neep neer nege nego negp nene neng neno neo- neoc neon neoo nepc nepe nepr nerc nere nero nerr ngen nger ngon ngor ngpc nngn nnnn nnpr noce noco noer nogg nogo non- none nong nonn nono noo- noon nooo noop noor nope nor- norc nore norg norn noro norr npcc nppc nren nroc nron nrpc nrpn nrrc o-eo occc occn oce ocee ocon ocpp ocre ocro ocrr oec- oecc oeec oen- oeno oere ogee ogen oger ogge ogog ogon ogre ogro onc- once onco one- onec onee oneg oneo onep oner onge ongo onne onno onon onor onpg oocr ooer oone oooo oore opec open opep oper opng opo- opon opor oppo orce orco ore- orec oreg oren oreo orer orge orgn orgo ornc orne orno oro- oroe oron oror orpc orpe orro pccc pcce pcep pcer pcgg pcoe pcpn pcpp pcrc pcre pece peco pecr peec peen peep peer pegg pego pen- penc pene peng penn peno peon peor pepe pepo per- perc pere perg pern pero perp perr pgcc pgce pger pgrc pnec pnon pnpo pnpp pnro poce poco poer poge pogg pogo ponc pone pong pono ponp poon poop poor pop- popc pope popo popp porc pore porg porn poro porr ppcc ppen pper pppn pppo pppp pprc prcc prcp pre- prec pree preg pren prep prnp pro- proc proe prog pron proo prop rccc rcep rcgc rcnr rcon rcpo rcrg recc rece recp recr reen reep rege regn rego regr rene reng renn reno reog reop repe repo repp repr rere rerg rero rnco rncp rocc roce roco roeg roen roer roge rogg rogo ronc rone rong rono roog roon roop roor rope ropo rorc rore roro rpoe rpon rppn rrrr