c-- ccc ccd cch cco ccr cdc cdd cdh cdo cdr cdy ch- chc chd chh cho chr chy co- coc cod coh coo cor coy crc crd crh cro crr cry cyc cyd cyo cyr dcc dcd dco dcr ddc ddd ddh ddo ddr ddy dh- dhc dhd dhh dho dhr doc dod doh doo dor doy drc drd dro drr dry dy- dyc dyd dyo dyr dyy hcc hcd hch hco hcr hcy hdc hdd hdh hdo hdr hdy hhc hhd hhh hho hhr hhy hoc hod hoh hoo hor hoy hr- hrc hrd hrh hro hrr hy- hyc hyd hyh hyo hyr hyy 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 ory oyd oyo rcc rcd rch rco rcr rdc rdd rdh rdo rdr rdy rh- rhc rhd rhh rho rhr roc rod roh roo ror roy rrc rrd rrh rrr ry- ryc ryd ryo ryr ryy ycc ycd ych yco ycy ydo ydy yhc yoc yod yoo yor yoy yrc yro yyc yyy