c-- ccc ccd cch cco ccr cdc cdd cdh cdo cdr ch- chc chd chh cho chr co- coc cod coh coo cor crc crd crh cro crr dcc dcd dco dcr ddc ddd ddh ddo ddr dh- dhc dhd dhh dho dhr doc dod doh doo dor drc drd dro drr hcc hcd hch hco hcr hdc hdd hdh hdo hdr hhc hhd hhh hho hhr hoc hod hoh hoo hor hr- hrc hrd hrh hro hrr oc- occ ocd och oco ocr odc odd odh odo odr ohc ohd ohh oho ohr oo- ooc ood ooh ooo oor or- orc ord orh oro orr rcc rcd rch rco rcr rdc rdd rdh rdo rdr rh- rhc rhd rhh rho rhr roc rod roh roo ror rrc rrd rrh rrr