cccc cccp cccu ccee ccpe ccpp ccpr ccrc ccre ccrp ccuc ccup cec- cece cecp ceec ceke cepc cepe cepp cepr cer- cerc cere cerp ckck cker ckpc ckpr ckrc cpce cpcu cpep cper cpre crcc crce crcr cre- crec cree crep creu crkc crkp crpc crue cruk crup cucc cuce cuck cuek cuer cuk- cuke cupe cupp cupr cure curr eccc ecce ecpp ecrc ecrr ecru eeee eeke eerc ekek eker ekpe ekur epcc epec epee eper eppc eppp eprp ercc erce ercp erec erer erke erpe errc erre eruc erur euer eur- eurc eure kccc kcck kccr kccu kcec kcee kcep kceu kckc kckk kckr kcpc kcpr kcpu kcrc kcrp kcrr kcru kcue kcuk kcup keck kecr keek keep keer kekc keke keku kep- kepc kepe kepu ker- kerc kere kerk kerp kerr keru keup keur kkck kkcr kkkk kkpc kkpk kkrc kkre kkrk kkrr kkup kkuu kpcc kpcr kpek kper kpke kpkk kpkr kppc kppk kppp kppr kprc kpre kprk kprp kprr kpru kpur krcc krce krcu krec kree krek kreu krkc krke krkk krkr krku krpr krpu krrc krre krrk krrr kruc krue kruk krup krur kucc kuce kucp kucr kuek kueu kuke kukk kuku kupe kupr kupu kure kurk kurr kuru kuuk kuur kuuu pccc pcce pcep pcer pcpp pcrc pcre pece peck pecr peec peek peep peer peke pekk pepe per- perc pere perk perp perr peru peur ppcc pper pppp pprc ppru ppur prcc prcp pre- prec pree prek prep preu prue pruu pu-e puce puck puer pueu puke puku pupe pupu pur- pure purp purr puru puuc rccc rcep recc rece reck recp recr recu reek reep reke repe repp repr repu rere reru reue reuk reup reuu rrrr ruce ruck ruer ruke rukk ruku rupe rupp rurc rure rurp ruru u-rp uccp ucrc ukcc ukek ukeu ukrc ukup ukur uppc uppe uppp uppu upup ure- urke urre uruk urup urur uucp uuuu