cccc ccee ccrc ccre ccrt cctc cctt cec- cece cect ceec ceke cer- cerc cere cert cet- cete ckck cker ckrc crcc crce crcr cre- crec cree cret crkc crrt crtc ctec ctrc eccc ecce ecct ecrc ecrr ect- ectc eeee eeke eerc eetc eete ekek eker eket ercc erce erec erer eret erke errc erre etcc etec etee eter etre ette kccc kcck kccr kcct kcec kcee kcet kckc kckk kckr kcrc kcrr kcrt kctc kcte keck kecr keek keer keet kekc keke ker- kerc kere kerk kerr kert ket- ketc kete ketk ketr kett kkck kkcr kkct kkkk kkrc kkre kkrk kkrr kkrt kktc kktk krcc krce krec kree krek kret krkc krke krkk krkr krrc krre krrk krrr krrt krtc krtk krtr ktcc ktce ktck ktcr ktec ktee ktek ktkc ktke ktkk ktkr ktkt ktrc ktre ktrk ktrr ktrt kttc kttk kttr kttt rccc rcet rctc recc rece reck recr rect reek reet reke rekt rere rert rete retr rett rrrr rtcc rtce rtee tccc tctc teck tecr tect teec teek teer teet teke ter- terc tere terk terr tete tetr tett trcc tre- trec tree trek tret trtc trte trtr tter tttt