c-- ccc cch cco ccr ccs ccx ch- chc chh cho chr chs chx chy co- coc coh coo cor cos cox coy crc crh cro crr crs crx cry csc csh cso csr css csx csy cxc cxh cxo cxr cxs cxx cyc cyo cyr cys hcc hch hco hcr hcs hcy hhc hhh hho hhr hhs hhy hoc hoh hoo hor hos hox hoy hr- hrc hrh hro hrr hrs hsc hsh hsr hss hsx hsy hxc hy- hyc hyh hyo hyr hys hyy oc- occ och oco ocr ocs ocx ohc ohh oho ohr ohs oo- ooc ooh ooo oor oos oox or- orc orh oro orr ors orx ory os- osc osh oso osr oss osx ox- oxc oxo oxx oxy oyo oys rcc rch rco rcr rcs rcx rh- rhc rhh rho rhr rhs roc roh roo ror ros rox roy rrc rrh rrr rrs rsc rsh rso rsr rss rsx rxr rxs ry- ryc ryo ryr rys ryy scc sch sco scr scs scx sh- shc shh sho shr shs shy soc soh soo sor sos sox soy sr- src srh sro srr srs srx sry ss- ssc ssh sso ssr sss ssx sxc sxs sy- syc syh syr sys syx xch xcr xcx xoc xoo xor xos xox xrc xrx xry xsc xss xxo xxx xxy xyr xyy ycc ych yco ycs ycy yhc yhs yoc yoo yor yos yox yoy yrc yro yrs ysc yso ysr yss ysy yxy yyc yys yyy