cccc cccs ccee ccss ccst cctc cctt cec- cece cecs cect ceec cees ceke cesc cese cess cest cet- cete cets ckck ckcs ckst ckts cscc csce cscs csec csee cset csks csse cstc csts ctec ctsc ctss ctts eccc ecce ecct eces ecks ecsc ecse ecss ect- ectc ects eecs eeee eees eeke eeks eese eesk eetc eete eets ekek ekes eket esce escs esee esek eses eset eske esks esse esst estc este ests etcc etcs etec etee etes ette kccc kcck kcct kcec kcee kcet kckc kckk kcsc kcse kcss kcst kctc kcte keck keek kees keet kekc keke keks kesc kesk kess kest ket- ketc kete ketk kets kett kkck kkcs kkct kkkk kkse kkss kkst kktc kktk kkts ksce ksck kscs ksec ksee ksek kset kske kskk ksks ksse ksss ksst kstc kste kstk ksts kstt ktcc ktce ktck ktcs ktec ktee ktek ktkc ktke ktkk ktks ktkt ktsc ktst kttc kttk ktts kttt sccc scce sccs scct scec scee scet sck- scsc scst sctc scts se-c se-e se-k se-s se-t sec- secc sece seck secs sect seec seek sees seet seke sekk sekt sesc sese sess sest set- setc sete sets sett skee skes sket skss sscc ssce sscs ssec ssee sses sset sssc ssss sstc ssts stcc stcs stec stee stek stes stet stks stss sttc tccc tctc tcts teck tecs tect teec teek tees teet teke tesc tese tess test tete tets tett tkts tscc tsec tses tset tsks tsse tsst tstc tsts ttss tttt