cccc cccp cccv ccee cche cchp cchr ccoc ccpe ccpp ccpr ccrc ccre ccrp ccvo cec- cece ceco cecp ceec ceop ceor cepc cepe ceph cepo cepp cepr cer- cerc cere cero cerp cevo chce chch chcp chec chee cheh chep cher chev choc choh choo chop chor chov chpp chpr chrc chro chrp chrr chvo coce coch coco cocp coep coho cooh coop cope coph copo copp copr cor- corc core coro corp corr cove covo cpce cpep cper cpre cpvc crcc crce crcr cre- crec cree creh creo crep croc croe croh croo crop cror crpc cvcc cver cvrr eccc ecce ecco eche echo eco- ecop ecpp ecrc ecrr ecrv eeee eeoc eerc eero ehcc eheh eher ehre eore epcc epch epec epee eper eph- epoc epor eppc eppo eppp epro eprp ercc erce erch ercp erec erer erev erhc eroc eroe eroo erpe errc erre erro erve ever evoe evoo evop evre hccc hcch hcpc hcrp hech heep heer hehe heho heor hepc hepe hepp herc here hero herp herr heve hhhh hhpc hoce hoch hocr hoer hohe hoho hooe hoop hoor hope hopo hopp horc hore horo horr hove hpcc hppe hree hrpc hrpp hrrc hvcc o-eo occc oce ocee oche ocpp ocre ocro ocrr oec- oecc oeec oere oevp ohcc ohee oher ohho ohoh ohre oocr ooer ooho oooh oooo oore opec opep oper opo- opor oppo orce orch orco ore- orec oreh oreo orer orhe oro- oroe oror orpc orpe orph orro orve orvr ovee over ovo- ovoo ovpp ovre pccc pcce pcep pcer pchp pcoe pcpp pcrc pcre pece pech peco pecr peec peep peer peev pehe peho pehr peor pepe pepo per- perc pere perh pero perp perr perv phcc phe- phoh phoo phrr poce poch poco poer pooh poop poor pop- popc pope popo popp porc pore poro porr povo ppcc pper pppo pppp pprc prcc prcp pre- prec pree prep prev pro- proc proe proo prop prov pvco rccc rcep rcpo rcvr recc rece rech recp recr reep reev rehe reop repe repo repp repr rere rero reve revo revp rhce rhcp rhee rheo rhoc rhoh rocc roce roch roco roer roev rohe rohr roop roor rope ropo rorc rore roro rove rovo rpho rpoe rrrr rv-c rver rvvh vche vecc vech veep veer veho veoh veor vepe vepr ver- vere vero veve vevo vhhh voce voer voho vooc voor vor- vore voro vpro vreo vrhe vroc vver vvvv