c-- ccc cch cco ccr ccs ch- chc chh cho chr chs chy co- coc coh coo cor cos coy crc crh cro crr crs cry csc csh cso csr css csy cyc cyo cyr cys hcc hch hco hcr hcs hcy hhc hhh hho hhr hhs hhy hoc hoh hoo hor hos hoy hr- hrc hrh hro hrr hrs hsc hsh hsr hss hsy hy- hyc hyh hyo hyr hys hyy oc- occ och oco ocr ocs ohc ohh oho ohr ohs oo- ooc ooh ooo oor oos or- orc orh oro orr ors ory os- osc osh oso osr oss oyo oys rcc rch rco rcr rcs rh- rhc rhh rho rhr rhs roc roh roo ror ros roy rrc rrh rrr rrs rsc rsh rso rsr rss ry- ryc ryo ryr rys ryy scc sch sco scr scs sh- shc shh sho shr shs shy soc soh soo sor sos soy sr- src srh sro srr srs sry ss- ssc ssh sso ssr sss sy- syc syh syr sys ycc ych yco ycs ycy yhc yhs yoc yoo yor yos yoy yrc yro yrs ysc yso ysr yss ysy yyc yys yyy