cccc cccp cccu ccee ccoc ccpe ccpp ccpr ccrc ccre ccrp ccuc ccup cec- cece ceco cecp ceec ceke ceop ceor ceou cepc cepe cepo cepp cepr cer- cerc cere cero cerp ckck ckco cker ckoc ckoo ckor ckpc ckpr ckrc coce cock coco cocp cocu coep cok- coke coko cook coop cope copo copp copr cor- corc core cork coro corp corr coue couk coup cour cpce cpcu cpep cper cpre crcc crce crcr cre- crec cree creo crep creu crkc crkp croc croe crok croo crop cror crpc crue cruk crup cucc cuce cuck cuek cuer cuk- cuke cupe cupo cupp cupr cure curo curr eccc ecce ecco ecko eco- ecop ecou ecpp ecrc ecrr ecru eeee eeke eeoc eerc eero ekco ekek eker ekpe ekpo ekur eore epcc epec epee eper epoc epor eppc eppo eppp epro eprp ercc erce ercp erec erer erke eroc eroe eroo erpe errc erre erro eruc erur euer eur- eurc eure euro kccc kcck kccr kccu kcec kcee kceo kcep kceu kckc kckk kcko kckr kcoe kcor kcou kcpc kcpo kcpr kcpu kcrc kcro kcrp kcrr kcru kcue kcuk kcup keck keco kecr keek keep keer kekc keke keko keku keok kep- kepc kepe kepu ker- kerc kere kerk kero kerp kerr keru keup keur kkck kkco kkcr kkkk kkoo kkor kkpc kkpk kkrc kkre kkrk kkro kkrr kkup kkuu kock kocp kokc koke kokk koko kokp kokr koku kooc kook kooo koop koor koou kope kopp kopr kopu korc kore kork koro korr koru koue kour kouu kpcc kpcr kpek kper kpke kpkk kpkr kpoc kpoe kpok kpoo kpop kpou kppc kppk kppo kppp kppr kprc kpre kprk kpro kprp kprr kpru kpur krcc krce krco krcu krec kree krek kreo kreu krkc krke krkk krko krkr krku kroc kroe krok kroo krop kror krpr krpu krrc krre krrk krro krrr kruc krue kruk krup krur kucc kuce kuco kucp kucr kuek kueu kuke kukk kuku kuok kuoo kuop kupe kupr kupu kure kurk kuro kurr kuru kuuk kuur kuuu o-eo occc oce ocee ocke ocpp ocre ocro ocrr ocur oec- oecc oeec oere okcu oker okko okok okor okpe okpo okre okro okur oocr ooer ooku oooo oore opec opep oper opo- opor oppo orce orco ore- orec orek oreo orer orke orko oro- oroe orok oror orpc orpe orro orup oucc ouer oupe our- oure ouro ouu- pccc pcce pcep pcer pcoe pcpp pcrc pcre pece peck peco pecr peec peek peep peer peke pekk peko peor peou pepe pepo per- perc pere perk pero perp perr peru peur poce pock poco poer poke poko poku pook poop poor pop- popc pope popo popp porc pore pork poro porr pouk poup pour ppcc pper pppo pppp pprc ppru ppur prcc prcp pre- prec pree prek prep preu pro- proc proe proo prop prou prue pruu pu-e puce puck pueo puer pueu puke puku pupe pupu pur- pure puro purp purr puru puuc rccc rcep rcpo recc rece reck recp recr recu reek reep reke reko reop reou repe repo repp repr repu rere rero reru reue reuk reup reuu rocc roce rock roco roer roke rokk roko rokr roku rook roop roor rope ropo rorc rore rork roro roru roue rouk roup rpoe rrrr ruce ruck ruer ruke rukk ruku ruok rupe rupp rurc rure ruro rurp ruru u-rp uccp ucrc ukcc ukek ukeu ukko ukok ukrc ukup ukur uocc uoke uor- uore upor uppc uppe uppp uppu upup ure- urke uro- urok uroo urpo urre uruk urup urur uucp uuoc uuuu