c-- ccc cch cco ccr ccs ccz ch- chc chh cho chr chs chy chz co- coc coh coo cor cos coy coz crc crh cro crr crs cry crz csc csh cso csr css csy csz cyc cyo cyr cys cz- czc czo hcc hch hco hcr hcs hcy hhc hhh hho hhr hhs hhy hhz hoc hoh hoo hor hos hoy hr- hrc hrh hro hrr hrs hrz hsc hsh hsr hss hsy hsz hy- hyc hyh hyo hyr hys hyy hzo hzs hzy oc- occ och oco ocr ocs ocz ohc ohh oho ohr ohs oo- ooc ooh ooo oor oos or- orc orh oro orr ors ory orz os- osc osh oso osr oss oyo oys ozo ozs ozz rcc rch rco rcr rcs rh- rhc rhh rho rhr rhs roc roh roo ror ros roy roz rrc rrh rrr rrs rsc rsh rso rsr rss ry- ryc ryo ryr rys ryy ryz rzo rzy scc sch sco scr scs sh- shc shh sho shr shs shy soc soh soo sor sos soy soz sr- src srh sro srr srs sry ss- ssc ssh sso ssr sss ssz sy- syc syh syr sys szr ycc ych yco ycs ycy yhc yhs yoc yoo yor yos yoy yrc yro yrs ysc yso ysr yss ysy ysz yyc yys yyy yyz yzr yzy zco zcs zhc zho zhr zhs zo- zoc zoo zor zos zrh zro zrs zsh zsz zzr zzs zzy zzz