-ol c-- ccc ccd cch ccl cco cdc cdd cdh cdl cdo ch- chc chd chh chl cho cl- clc cld clh cll clo co- coc cod coh col coo dcc dcd dcl dco ddc ddd ddh ddl ddo dh- dhc dhd dhh dhl dho dl- dlc dld dlh dll dlo doc dod doh dol doo hcc hcd hch hcl hco hdc hdd hdh hdl hdo hhc hhd hhh hhl hho hlc hld hlh hll hlo hoc hod hoh hol hoo lcc lcd lch lcl lco ldc ldd ldh ldl ldo lhc lhd lhh lho llc lld lll llo loc lod loh lol loo oc- occ ocd och ocl oco odc odd odh odl odo ohc ohd ohh ohl oho olc old oll olo oo- ooc ood ooh ool ooo