-ene -one cccc cccp ccee ccnc ccne ccnp ccnr ccoc ccpe ccpn ccpp ccpr ccrc ccre ccrp cec- cece ceco cecp ceec cen- cene ceno ceop ceor cepc cepe cepo cepp cepr cer- cerc cere cern cero cerp ceze cnco cncp cnep cnnz cnrc cnrr coce coco cocp coen coep con- conc cone conn cono coon coop cope copo copp copr cor- corc core corn coro corp corr coze cozz cpce cpep cper cpre crcc crce crcr crcz cre- crec cree cren creo crep crne croc croe cron croo crop cror croz crpc czon eccc ecce ecco ecne eco- econ ecop ecpp ecrc ecrr eeee eeoc eerc eero eeze ence enco enee eneo ener enez ennc enne eno- enoc enoe enon enp- enzo eone eore epcc epec epee epen eper epoc epon epor eppc eppo eppp epro eprp ercc erce ercp erec eren erer erez erne erno eroc eroe eron eroo erpe errc erre erro ezer ezop ezzo nccc nccn nccp nccr ncec ncee ncen ncep ncer ncnc ncoc ncor ncpc ncrc ncre ncrp necc nece neco necr neen neep neer nene neno neo- neoc neon neoo nepc nepe nepr nerc nere nero nerr nerz nnnn nnpr noce noco noer noez non- none nonn nono noo- noon nooo noop noor nope nor- norc nore norn noro norr npcc nppc nren nroc nron nrpc nrpn nrrc nzcc nzpc nzpp o-eo occc occn oce ocee ocon ocpp ocre ocro ocrr oec- oecc oeec oen- oeno oere onc- once onco one- onec onee oneo onep oner onez onne onno onon onor onoz onze onzo oocr ooer oone oooo oore ooze opec open opep oper opo- opon opor oppo orce orco ore- orec oren oreo orer ornc orne orno oro- oroe oron oror oroz orpc orpe orro orzo ozee ozen ozer ozon pccc pcce pcep pcer pcoe pcpn pcpp pcrc pcre pece peco pecr pecz peec peen peep peer pen- penc pene penn peno penz peon peor pepe pepo per- perc pere pern pero perp perr peze pezo pnec pnon pnpo pnpp pnro poce poco poer ponc pone pono ponp poon poop poor pop- popc pope popo popp porc pore porn poro porr porz poze pozo ppcc ppen pper pppn pppo pppp pprc prcc prcp pre- prec pree pren prep prez prnp pro- proc proe pron proo prop proz rccc rcep rcnr rcon rcpo recc rece recp recr recz reen reep rene renn reno renz reop repe repo repp repr rere rero reze rnco rncp rocc roce roco roen roer ronc rone rono roon roop roor rooz rope ropo rorc rore roro roze rozz rpoe rpon rppn rrrr z-ro zeep zenn zeno zeon zepo zepp zero zeze znen zoco zon- zone zoo- zoon zoop zope zorc zore zorn zoro zozo zrce zrze zzzz