cccc cccp cccu ccee ccpe ccpp ccpr ccrc ccre ccrp ccrt cctc cctt ccuc ccup ccut cec- cece cecp cect ceec cepc cepe cepp cepr cept cer- cerc cere cerp cert cet- cete cetp cpce cpcu cpep cper cpre cprt cptp cptr crcc crce crcr cre- crec cree crep cret creu crpc crrt crtc crtp crue crup crut ctcp ctec ctep ctpp ctrc ctrp cucc cuce cuer cupe cupp cupr cure curr curt cut- cutc cute cutt eccc ecce ecct ecpp ecrc ecrr ecru ect- ectc eeee eerc eetc eete eetu epcc epec epee eper eppc eppp eprp epte ercc erce ercp erec erer eret erpe errc erre ertu eruc erur etcc etec etee eter etre ette ettu euer eur- eurc eure eurt pccc pcce pcep pcer pcpp pcrc pcre pcte pece pecr pect peec peep peer peet pepe per- perc pere perp perr pert peru pete petr pett peur peut ppcc pper pppp pprc ppru pptt ppur prcc prcp pre- prec pree prep pret preu prtc prtp prtr prue prut pruu ptcc pter pttc pu-e puce puer puet pueu pupe pupu pur- pure purp purr puru put- pute putt putu puuc rccc rcep rcet rcpt rctc recc rece recp recr rect recu reep reet repe repp repr rept repu rere rert reru rete retr rett reue reup reut reuu rpet rrrr rtcc rtce rtee rttp ruce ruct ruer ruet rupe rupp rupt rurc rure rurp ruru rute rutt rutu tccc tccu tcep tctc tecr tect teec teer teet tepe tepp tepu ter- terc tere terp terr teru tete tetr tett tetu teut tpcp tper tppp tppr tpte tptp tptr tput trcc tre- trec tree tret treu trpc trpe trpp trtc trte trtr truc true trut truu ttcp tter tttt tucc tuer tuet tupe tupu turc ture turp turr turt turu tute tutt tutu u-rp uccp ucrc ucut uppc uppe uppp uppu upup ure- uret urre urte urup urur urut utec utep uter uttu uucp uuuu