-ol c-- ccc cck ccl ccn cco ckc cko cl- clc clk cll cln clo cn- cnc cnl cnn cno co- coc cok col con coo kcc kck kcl kcn kkc kkk kkl kkn kl- klc klo kn- knc knk knl knn kno koc kok kol kon koo lcc lck lcl lcn lco lkl llc llk lll lln llo lnc lnk lnl lnn lno loc lok lol lon loo ncc nck ncl ncn nco nkc nkk nkn nko nlc nlk nll nln nlo nnc nnk nnl nnn nno no- noc nok nol non noo oc- occ ock ocl ocn oco okc okk okl oko olc olk oll oln olo on- onc onk onl onn ono oo- ooc ook ool oon ooo