cccc cccs ccrc ccrs ccrt ccss ccst cctc cctt ckck ckcs ckrc ckst ckts crcc crcr crkc crrt crss crst crtc crts cscc cscr cscs csks csrc csrs cssr cstc cstr csts ctrc ctrs ctsc ctss ctts kccc kcck kccr kcct kckc kckk kckr kcrc kcrr kcrs kcrt kcsc kcsr kcss kcst kctc kkck kkcr kkcs kkct kkkk kkrc kkrk kkrr kkrs kkrt kksr kkss kkst kktc kktk kkts krcc krcs krkc krkk krkr krks krrc krrk krrr krrs krrt krsc krsk krsr krss krst krtc krtk krtr krts ksck kscr kscs kskk kskr ksks ksrr ksrs ksrt kssr ksss ksst kstc kstk kstr ksts kstt ktcc ktck ktcr ktcs ktkc ktkk ktkr ktks ktkt ktrc ktrk ktrr ktrs ktrt ktsc ktsr ktst kttc kttk kttr ktts kttt rccc rccs rcsc rcss rctc rcts rkss rkts rrrr rscc rscs rsts rtcc rtss rtts sccc sccs scct sck- scr- scrc scrs scsc scsr scst sctc sctr scts skrt skss srcc srct srtr sscc sscs ssrc ssrs sssc ssss sstc ssts stcc stcs stks strc strk strs stss sttc sttr tccc tctc tcts tkts trcc trst trtc trtr tscc tsks tssr tsst tstc tsts ttss tttt