cccc cccp cccu ccee ccoc ccpe ccpp ccpr ccrc ccre ccrp ccuc ccup cec- cece ceco cecp ceec ceop ceor ceou cepc cepe cepo cepp cepr cer- cerc cere cero cerp coce coco cocp cocu coep coop cope copo copp copr cor- corc core coro corp corr coue coup cour cpce cpcu cpep cper cpre crcc crce crcr cre- crec cree creo crep creu croc croe croo crop cror crpc crue crup cucc cuce cuer cupe cupo cupp cupr cure curo curr eccc ecce ecco eco- ecop ecou ecpp ecrc ecrr ecru eeee eeoc eerc eero eore epcc epec epee eper epoc epor eppc eppo eppp epro eprp ercc erce ercp erec erer eroc eroe eroo erpe errc erre erro eruc erur euer eur- eurc eure euro o-eo occc oce ocee ocpp ocre ocro ocrr ocur oec- oecc oeec oere oocr ooer oooo oore opec opep oper opo- opor oppo orce orco ore- orec oreo orer oro- oroe oror orpc orpe orro orup oucc ouer oupe our- oure ouro ouu- pccc pcce pcep pcer pcoe pcpp pcrc pcre pece peco pecr peec peep peer peor peou pepe pepo per- perc pere pero perp perr peru peur poce poco poer poop poor pop- popc pope popo popp porc pore poro porr poup pour ppcc pper pppo pppp pprc ppru ppur prcc prcp pre- prec pree prep preu pro- proc proe proo prop prou prue pruu pu-e puce pueo puer pueu pupe pupu pur- pure puro purp purr puru puuc rccc rcep rcpo recc rece recp recr recu reep reop reou repe repo repp repr repu rere rero reru reue reup reuu rocc roce roco roer roop roor rope ropo rorc rore roro roru roue roup rpoe rrrr ruce ruer rupe rupp rurc rure ruro rurp ruru u-rp uccp ucrc uocc uor- uore upor uppc uppe uppp uppu upup ure- uro- uroo urpo urre urup urur uucp uuoc uuuu