c-- ccc ccr ccs ccu ccz crc crr crs cru cry crz csc csr css csu csy csz cuc cur cus cuu cuy cuz cyc cyr cys cz- czc rcc rcr rcs rcu rrc rrr rrs rru rsc rsr rss rsu ruc rur rus ruu ruy ruz ry- ryc ryr rys ryu ryy ryz rzy scc scr scs scu sr- src srr srs sry ss- ssc ssr sss ssu ssz suc sur sus suu suy suz sy- syc syr sys syu szr szu ucc ucr ucs ucu ur- urc urr urs uru ury urz usc usr uss usu usz uuc uur uus uuu uyc uys uyu uzu ycc ycs ycu ycy yrc yrs yru ysc ysr yss ysu ysy ysz yur yus yuu yuy yyc yys yyu yyy yyz yzr yzu yzy zcs zrs zsu zsz zuc zur zus zuz zzr zzs zzy zzz