c-- ccc ccn cco ccr ccs ccz cn- cnc cnn cno cnr cns cny co- coc con coo cor cos coy coz crc crn cro crr crs cry crz csc csn cso csr css csy csz cyc cyn cyo cyr cys cz- czc czo ncc ncn nco ncr ncs nnc nnn nno nns nnz no- noc non noo nor nos noy noz nrc nrn nro nrr nrs nry nrz nsc nsn nso nsr nss nsy nsz nyc nyn nyo nys nyy nzo nzs nzz oc- occ ocn oco ocr ocs ocz on- onc onn ono onr ons ony oo- ooc oon ooo oor oos or- orc orn oro orr ors ory orz os- osc osn oso osr oss oyo oys ozo ozs ozz rcc rcn rco rcr rcs rnc rnn rno rnr rns rny rnz roc ron roo ror ros roy roz rrc rrn rrr rrs rsc rsn rso rsr rss ry- ryc ryn ryo ryr rys ryy ryz rzo rzy scc scn sco scr scs snc snn sno snr sns sny soc son soo sor sos soy soz sr- src srn sro srr srs sry ss- ssc ssn sso ssr sss ssz sy- syc syn syr sys szr ycc yco ycs ycy ynn yns yny yoc yon yoo yor yos yoy yrc yrn yro yrs ysc yso ysr yss ysy ysz yyc yys yyy yyz yzr yzy zco zcs znc znn zno zns zo- zoc zon zoo zor zos zro zrs zsz zzr zzs zzy zzz