c-- ccc ccd cch cco ccr ccs cdc cdd cdh cdo cdr cds ch- chc chd chh cho chr chs co- coc cod coh coo cor cos crc crd crh cro crr crs csc csd csh cso csr css dcc dcd dco dcr dcs ddc ddd ddh ddo ddr dds dh- dhc dhd dhh dho dhr dhs doc dod doh doo dor dos drc drd dro drr drs dsc dsd dsh dso dsr dss hcc hcd hch hco hcr hcs hdc hdd hdh hdo hdr hds hhc hhd hhh hho hhr hhs hoc hod hoh hoo hor hos hr- hrc hrd hrh hro hrr hrs hsc hsd hsh hsr hss oc- occ ocd och oco ocr ocs odc odd odh odo odr ods ohc ohd ohh oho ohr ohs oo- ooc ood ooh ooo oor oos or- orc ord orh oro orr ors os- osc osd osh oso osr oss rcc rcd rch rco rcr rcs rdc rdd rdh rdo rdr rds rh- rhc rhd rhh rho rhr rhs roc rod roh roo ror ros rrc rrd rrh rrr rrs rsc rsd rsh rso rsr rss scc scd sch sco scr scs sdc sdd sdh sdo sdr sds sh- shc shd shh sho shr shs soc sod soh soo sor sos sr- src srd srh sro srr srs ss- ssc ssd ssh sso ssr sss