c-- ccc cck ccm cco ccs ccz ckc ckm cko cks cky cmc cmk cmm cmo cms cmy co- coc cok com coo cos coy coz csc csk csm cso css csy csz cyc cyk cym cyo cys cz- czc czk czm czo k-z kcc kck kcm kcs kkc kkk kkm kks kky kmc kmk kmm kmo kms kmz koc kok kom koo kos koy koz ksc ksk ksm kso kss kyc kym kyo kys kyz kzo kzy m-o mc- mcc mck mcm mco mcs mcz mkc mkk mkm mko mks mky mkz mmc mmk mmm mmo mms mmz moc mok mom moo mos moy moz msc msk msm mso mss msy my- myc myk mym myo mys mzm oc- occ ock ocm oco ocs ocz okc okk oko oks om- omc omm omo oms omy omz oo- ooc ook oom ooo oos os- osc osk osm oso oss oyo oys ozm ozo ozs ozz scc sck scm sco scs sk- skc skk skm sko sks sky smc smk smm smo sms smy smz soc sok som soo sos soy soz ss- ssc ssk ssm sso sss ssz sy- syc syk sym sys ycc yco ycs ycy ykk ykm ymc ymm ymo yms yoc yok yom yoo yos yoy ysc ysk ysm yso yss ysy ysz yyc yys yyy yyz yzy zco zcs zks zmc zmk zmm zms zo- zoc zok zom zoo zos zsm zsz zym zzs zzy zzz