c-- ccc ccd cch cck cco ccu cdc cdd cdh cdk cdo cdu ch- chc chd chh chk cho chu ckc ckd ckh cko co- coc cod coh cok coo cou cuc cud cuh cuk cuo cuu dcc dcd dck dco dcu ddc ddd ddh ddk ddo ddu dh- dhc dhd dhh dhk dho dhu dkc dkk dko dku doc dod doh dok doo dou duc dud duh duk duo hcc hcd hch hck hco hdc hdd hdh hdk hdo hdu hhc hhd hhh hhk hho hhu hkd hkh hkk hko hku hoc hod hoh hok hoo hou huc hud huh huk huo huu kcc kcd kch kck kcu kdc kdh kdk kdo kdu khh khk kho khu kkc kkh kkk kku koc kod koh kok koo kou kuc kud kuh kuk kuu oc- occ ocd och ock oco ocu odc odd odh odo odu ohc ohd ohh oho ohu okc okd okk oko oku oo- ooc ood ooh ook ooo ou- ouc oud ouh ouk ouo ucc ucd uch uck uco ucu udc udd udk udo udu uhc uhd uhh uho uhu ukc ukk uku uoc uod uok uoo uuc uuu