c-- ccc ccd cch cco ccu cdc cdd cdh cdo cdu ch- chc chd chh cho chu co- coc cod coh coo cou cuc cud cuh cuo cuu dcc dcd dco dcu ddc ddd ddh ddo ddu dh- dhc dhd dhh dho dhu doc dod doh doo dou duc dud duh duo hcc hcd hch hco hdc hdd hdh hdo hdu hhc hhd hhh hho hhu hoc hod hoh hoo hou huc hud huh huo huu oc- occ ocd och oco ocu odc odd odh odo odu ohc ohd ohh oho ohu oo- ooc ood ooh ooo ou- ouc oud ouh ouo ucc ucd uch uco ucu udc udd udo udu uhc uhd uhh uho uhu uoc uod uoo uuc uuu