c-- ccc ccd cch cco ccs ccz cdc cdd cdh cdo cds cdz ch- chc chd chh cho chs chz co- coc cod coh coo cos coz csc csd csh cso css csz cz- czc czd czo dcc dcd dco dcs ddc ddd ddh ddo dds ddz dh- dhc dhd dhh dho dhs doc dod doh doo dos doz dsc dsd dsh dso dss dsz dzd dzo dzs hcc hcd hch hco hcs hdc hdd hdh hdo hds hdz hhc hhd hhh hho hhs hhz hoc hod hoh hoo hos hsc hsd hsh hss hsz hzd hzo hzs oc- occ ocd och oco ocs ocz odc odd odh odo ods ohc ohd ohh oho ohs oo- ooc ood ooh ooo oos os- osc osd osh oso oss ozo ozs ozz scc scd sch sco scs sdc sdd sdh sdo sds sdz sh- shc shd shh sho shs soc sod soh soo sos soz ss- ssc ssd ssh sso sss ssz szd zco zcs zds zhc zho zhs zo- zoc zod zoo zos zsh zsz zzs zzz