c-- ccc cck ccn cco ccr ccs ccz ckc cko cks cky cn- cnc cnn cno cnr cns cny co- coc cok con coo cor cos coy coz crc crk crn cro crr crs cry crz csc csk csn cso csr css csy csz cyc cyk cyn cyo cyr cys cz- czc czk czo k-z kcc kck kcn kcr kcs kkc kkk kkn kkr kks kky kn- knc knk knn kno knr koc kok kon koo kor kos koy koz krc krk krn kro krr krs kry ksc ksk ksn kso ksr kss kyc kyn kyo kyr kys kyz kzo kzy ncc nck ncn nco ncr ncs nkc nkk nkn nko nkr nks nky nnc nnk nnn nno nns nnz no- noc nok non noo nor nos noy noz nrc nrk nrn nro nrr nrs nry nrz nsc nsk nsn nso nsr nss nsy nsz nyc nyk nyn nyo nys nyy nzo nzs nzz oc- occ ock ocn oco ocr ocs ocz okc okk oko okr oks on- onc onk onn ono onr ons ony oo- ooc ook oon ooo oor oos or- orc ork orn oro orr ors ory orz os- osc osk osn oso osr oss oyo oys ozo ozs ozz rcc rcn rco rcr rcs rkc rkk rko rks rky rkz rnc rnn rno rnr rns rny rnz roc rok ron roo ror ros roy roz rrc rrk rrn rrr rrs rsc rsk rsn rso rsr rss ry- ryc ryk ryn ryo ryr rys ryy ryz rzo rzy scc sck scn sco scr scs sk- skc skk sko skr sks sky snc snk snn sno snr sns sny soc sok son soo sor sos soy soz sr- src srk srn sro srr srs sry ss- ssc ssk ssn sso ssr sss ssz sy- syc syk syn syr sys szr ycc yco ycs ycy ykk ykn ynk ynn yns yny yoc yok yon yoo yor yos yoy yrc yrn yro yrs ysc ysk yso ysr yss ysy ysz yyc yys yyy yyz yzr yzy zco zcs zks znc znn zno zns zo- zoc zok zon zoo zor zos zro zrs zsz zzr zzs zzy zzz