-ol c-- ccc ccd cch ccl cco ccs cdc cdd cdh cdl cdo cds ch- chc chd chh chl cho chs cl- clc cld clh cll clo cls co- coc cod coh col coo cos csc csd csh csl cso css dcc dcd dcl dco dcs ddc ddd ddh ddl ddo dds dh- dhc dhd dhh dhl dho dhs dl- dlc dld dlh dll dlo dls doc dod doh dol doo dos dsc dsd dsh dsl dso dss hcc hcd hch hcl hco hcs hdc hdd hdh hdl hdo hds hhc hhd hhh hhl hho hhs hlc hld hlh hll hlo hls hoc hod hoh hol hoo hos hsc hsd hsh hsl hss lcc lcd lch lcl lco lcs ldc ldd ldh ldl ldo lds lhc lhd lhh lho lhs llc lld lll llo lls loc lod loh lol loo los lsc lsd lsh lsl lso lss oc- occ ocd och ocl oco ocs odc odd odh odl odo ods ohc ohd ohh ohl oho ohs olc old oll olo ols oo- ooc ood ooh ool ooo oos os- osc osd osh osl oso oss scc scd sch scl sco scs sdc sdd sdh sdl sdo sds sh- shc shd shh shl sho shs slc sld slh sll slo sls soc sod soh sol soo sos ss- ssc ssd ssh ssl sso sss