c-- ccc cch cco ccr ccs ccz ch- chc chh cho chr chs chz co- coc coh coo cor cos coz crc crh cro crr crs crz csc csh cso csr css csz cz- czc czo hcc hch hco hcr hcs hhc hhh hho hhr hhs hhz hoc hoh hoo hor hos hr- hrc hrh hro hrr hrs hrz hsc hsh hsr hss hsz hzo hzs oc- occ och oco ocr ocs ocz ohc ohh oho ohr ohs oo- ooc ooh ooo oor oos or- orc orh oro orr ors orz os- osc osh oso osr oss ozo ozs ozz rcc rch rco rcr rcs rh- rhc rhh rho rhr rhs roc roh roo ror ros roz rrc rrh rrr rrs rsc rsh rso rsr rss rzo scc sch sco scr scs sh- shc shh sho shr shs soc soh soo sor sos soz sr- src srh sro srr srs ss- ssc ssh sso ssr sss ssz szr zco zcs zhc zho zhr zhs zo- zoc zoo zor zos zrh zro zrs zsh zsz zzr zzs zzz