cccc cccu ccee ccrc ccre ccrt cctc cctt ccuc ccut cec- cece cect ceec ceke cer- cerc cere cert cet- cete ckck cker ckrc crcc crce crcr cre- crec cree cret creu crkc crrt crtc crue cruk crut ctec ctrc cucc cuce cuck cuek cuer cuk- cuke cure curr curt cut- cutc cute cutt eccc ecce ecct ecrc ecrr ecru ect- ectc eeee eeke eerc eetc eete eetu ekek eker eket ekur ercc erce erec erer eret erke errc erre ertu eruc erur etcc etec etee eter etre ette ettu euer eur- eurc eure eurt kccc kcck kccr kcct kccu kcec kcee kcet kceu kckc kckk kckr kcrc kcrr kcrt kcru kctc kcte kctu kcue kcuk keck kecr keek keer keet kekc keke keku ker- kerc kere kerk kerr kert keru ket- ketc kete ketk ketr kett ketu keur kkck kkcr kkct kkkk kkrc kkre kkrk kkrr kkrt kktc kktk kktu kkut kkuu krcc krce krcu krec kree krek kret kreu krkc krke krkk krkr krku krrc krre krrk krrr krrt krtc krtk krtr kruc krue kruk krur ktcc ktce ktck ktcr ktec ktee ktek ktkc ktke ktkk ktkr ktkt ktku ktrc ktre ktrk ktrr ktrt ktru kttc kttk kttr kttt kttu ktuc kucc kuce kucr kuek kueu kuke kukk kuku kure kurk kurr kurt kuru kute kutr kutt kutu kuuk kuur kuuu rccc rcet rctc recc rece reck recr rect recu reek reet reke rekt rere rert reru rete retr rett reue reuk reut reuu rrrr rtcc rtce rtee ruce ruck ruct ruer ruet ruke rukk ruku rurc rure ruru rute rutt rutu tccc tccu tctc teck tecr tect teec teek teer teet teke ter- terc tere terk terr teru tete tetr tett tetu teuk teut trcc tre- trec tree trek tret treu trtc trte trtr truc true truk trut truu tter tttt tucc tuck tuer tuet tuke turc ture turk turr turt turu tute tutt tutu ucrc ucut ukcc ukek ukeu ukrc ukur ure- uret urke urre urte uruk urur urut utec uter uttu uuuu