c-- ccc ccd cch cco ccw cdc cdd cdh cdo cdw ch- chc chd chh cho chw co- coc cod coh coo cow cw- cwc cwd cwh cwo dcc dcd dco dcw ddc ddd ddh ddo ddw dh- dhc dhd dhh dho dhw doc dod doh doo dow dwc dwh dwo dww hcc hcd hch hco hcw hdc hdd hdh hdo hdw hhc hhd hhh hho hhw hoc hod hoh hoo how hw- hwd hwo hww oc- occ ocd och oco ocw odc odd odh odo ohc ohd ohh oho oo- ooc ood ooh ooo oow owc owd owh owo oww wcc wcd wch wco wcw wdc wh- whc whd whh who whw woc wod woh woo wow wwc wwd wwo www