cccc cccs ccrc ccrs ccss ckck ckcs ckcy ckrc ckry crcc crcr crcz crkc crss cry- crys cryz cscc cscr cscs csks csrc csrs cssr csys cyc- cycc cycs cyrk cyrs cyy- cyyc czyz kccc kcck kccr kccy kckc kckk kckr kcky kckz kcrc kcrr kcrs kcry kcrz kcsc kcsr kcss kcsy kcyk kcys kcyy kcyz kczz kkck kkcr kkcs kkcy kkkk kkrc kkrk kkrr kkrs kkrz kksr kkss kkyc kkys kkyy kkyz kkzy kkzz krcc krcs krkc krkk krkr krks krky krkz krrc krrk krrr krrs krry krrz krsc krsk krsr krss krsy kryk kryy krzk krzr krzs krzy krzz ksck kscr kscs kscy kskk kskr ksks ksky kskz ksrr ksrs ksry ksrz kssr ksss kssz ksyc ksyr ksyy kszr kycc kyck kycr kycs kykc kykk kykr kyks kyky kykz kyrc kyrk kyrs kysc kysk kysr kyyk kyys kyyy kyyz kyzk kyzs kyzz kzcr kzkr kzks kzky kzkz kzrc kzrk kzrr kzrs kzrz kzsc kzyr kzzk kzzr kzzs kzzy kzzz rccc rccs rcsc rcss rcyc rkss rrrr rscc rscs rscy ryck rysy sccc sccs sccy sck- scr- scrc scrs scry scsc scsr skss sky- skyr skys skyy srcc sscc sscs ssrc ssrs sssc ssss syck sycr syrs syry syss syyk szss szyk yccc yksc yyyy zsss zzzs zzzz