-ol c-- ccc ccd ccl ccn cco cdc cdd cdl cdn cdo cl- clc cld cll cln clo cn- cnc cnd cnl cnn cno co- coc cod col con coo dcc dcd dcl dcn dco ddc ddd ddl ddn ddo dl- dlc dld dll dlo dnc dnd dnl dnn dno doc dod dol don doo lcc lcd lcl lcn lco ldc ldd ldl ldn ldo llc lld lll lln llo lnc lnd lnl lnn lno loc lod lol lon loo ncc ncd ncl ncn nco ndc ndd ndl ndn ndo nlc nld nll nln nlo nnc nnl nnn nno no- noc nod nol non noo oc- occ ocd ocl ocn oco odc odd odl odn odo olc old oll oln olo on- onc ond onl onn ono oo- ooc ood ool oon ooo