-ene -one cccc cccp cccu ccee ccnc ccne ccnp ccnr ccnu ccoc ccpe ccpn ccpp ccpr ccrc ccre ccrp ccuc ccup cec- cece ceco cecp ceec cen- cene ceno ceop ceor ceou cepc cepe cepo cepp cepr cer- cerc cere cern cero cerp cnco cncp cnep cnrc cnrr coce coco cocp cocu coen coep con- conc cone conn cono coon coop cope copo copp copr cor- corc core corn coro corp corr coue coun coup cour cpce cpcu cpep cper cpre crcc crce crcr cre- crec cree cren creo crep creu crne croc croe cron croo crop cror crpc crue crun crup cucc cuce cucn cuer cune cuno cunp cuon cupe cupo cupp cupr cure curn curo curr eccc ecce ecco ecne eco- econ ecop ecou ecpp ecrc ecrr ecru eeee eeoc eerc eero ence enco enee eneo ener ennc enne ennu eno- enoc enoe enon enp- enue enur eone eore epcc epec epee epen eper epoc epon epor eppc eppo eppp epro eprp ercc erce ercp erec eren erer erne erno eroc eroe eron eroo erpe errc erre erro eruc erur euer eur- eurc eure euro n-up nccc nccn nccp nccr nccu ncec ncee ncen ncep ncer ncnc ncoc ncor ncpc ncrc ncre ncrp ncue necc nece neco necr neen neep neer nene neno nenu neo- neoc neon neoo nepc nepe nepr nerc nere nero nerr neru neuc neue neun neuo neur neuu nnnn nnpr noce noco noer non- none nonn nono nonu noo- noon nooo noop noor nope nor- norc nore norn noro norr noun noup nour npcc nppc nren nroc nron nrpc nrpn nrrc nuce nucu nuee nuer nunc nune nunn nuno nuoc nuon nupe nurc nure nurn nurp nurr nuru o-eo occc occn oce ocee ocon ocpp ocre ocro ocrr ocur oec- oecc oeec oen- oeno oere onc- once onco one- onec onee oneo onep oner onne onno onon onor onpu onue onup onur oocr ooer oone oooo oore opec open opep oper opo- opon opor oppo orce orco ore- orec oren oreo orer ornc orne orno oro- oroe oron oror orpc orpe orro orup oucc ouen ouer oun- oune oupe our- oure ourn ouro ouu- pccc pcce pcep pcer pcoe pcpn pcpp pcrc pcre pcun pece peco pecr peec peen peep peer pen- penc pene penn peno penu peon peor peou pepe pepo per- perc pere pern pero perp perr peru peun peur pnec pneu pnon pnpo pnpp pnro pnup poce poco poer ponc pone pono ponp poon poop poor pop- popc pope popo popp porc pore porn poro porr poun poup pour ppcc ppen pper pppn pppo pppp pprc ppru ppur prcc prcp pre- prec pree pren prep preu prnp pro- proc proe pron proo prop prou prue pruu pu-e puce pueo puer pueu punc pune puno punu pupe pupu pur- pure puro purp purr puru puuc rccc rcep rcnr rcon rcpo recc rece recp recr recu reen reep rene renn reno renu reop reou repe repo repp repr repu rere rero reru reue reup reuu rnco rncp rocc roce roco roen roer ronc rone rono roon roop roor rope ropo rorc rore roro roru roue roun roup rpoe rpon rppn rrrr rrun ruce ruen ruer runc rune runn runo rupe rupp rurc rure ruro rurp ruru ruun u-rp uccp ucon ucrc ueno uncc unce unco uncp unec unee unen uner unne unno unon unop unpc unro uocc uone uor- uore upen upne upnp upon upor uppc uppe uppp uppu upup ure- urne uro- uroo urpo urre urun urup urur uucp uuen uuno uuoc uuuu