cccc cccp cccu cccv ccee ccoc ccpe ccpp ccpr ccrc ccre ccrp ccuc ccup ccvo cec- cece ceco cecp ceec ceop ceor ceou cepc cepe cepo cepp cepr cer- cerc cere cero cerp cevo coce coco cocp cocu coep coop cope copo copp copr cor- corc core coro corp corr coue coup cour cove covo cpce cpcu cpep cper cpre cpvc 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 cuve cvcc cver cvrr eccc ecce ecco eco- ecop ecou ecpp ecrc ecrr ecru ecrv eeee eeoc eerc eero eore epcc epec epee eper epoc epor eppc eppo eppp epro eprp ercc erce ercp erec erer erev eroc eroe eroo erpe errc erre erro eruc erur eruv erve euer eur- eurc eure euro ever evoe evoo evop evre o-eo occc oce ocee ocpp ocre ocro ocrr ocur oec- oecc oeec oere oevp oocr ooer oooo oore opec opep oper opo- opor oppo orce orco ore- orec oreo orer oro- oroe oror orpc orpe orro orup orve orvr oucc ouer oupe oupv our- oure ouro ouu- ovee over ovo- ovoo ovpp ovre pccc pcce pcep pcer pcoe pcpp pcrc pcre pece peco pecr peec peep peer peev peor peou pepe pepo per- perc pere pero perp perr peru perv peur poce poco poer poop poor pop- popc pope popo popp porc pore poro porr poup pour povo ppcc pper pppo pppp pprc ppru ppur prcc prcp pre- prec pree prep preu prev pro- proc proe proo prop prou prov prue pruu pu-e puce pueo puer pueu pupe pupu pur- pure puro purp purr puru puuc pvco rccc rcep rcpo rcuv rcvr recc rece recp recr recu reep reev reop reou repe repo repp repr repu rere rero reru reue reup reuu reve revo revp rocc roce roco roer roev roop roor rope ropo rorc rore roro roru roue roup rove rovo rpoe rrrr ruce ruer rupe rupp rurc rure ruro rurp ruru ruve ruvu rv-c rver u-rp uccp ucrc uocc uor- uore uovo upor uppc uppe uppp uppu upup upvc ure- uro- uroo urpo urre urup urur urve uucp uuoc uuuu uv-c uver uvvu vecc veep veer veor vepe vepr ver- vere vero veur veve vevo voce voer voeu vooc voor vor- vore voro voru voue vour vpro vreo vroc vuco vurp vver vvvv