-ol c-- ccc cck ccl ccn cco cct ckc cko ckt cl- clc clk cll cln clo clt cn- cnc cnl cnn cno cnt co- coc cok col con coo cot ctc ctk ctl ctn cto ctt k-t kcc kck kcl kcn kct kkc kkk kkl kkn kkt kl- klc klo klt kn- knc knk knl knn kno knt koc kok kol kon koo kot ktc ktk ktl ktn kto ktt lcc lck lcl lcn lco lct lkl lkt llc llk lll lln llo llt lnc lnk lnl lnn lno lnt loc lok lol lon loo lot ltc ltk ltl lto ltt ncc nck ncl ncn nco nct nkc nkk nkn nko nkt nlc nlk nll nln nlo nlt nnc nnk nnl nnn nno nnt no- noc nok nol non noo not ntc ntk ntn nto ntt oc- occ ock ocl ocn oco oct okc okk okl oko olc olk oll oln olo olt on- onc onk onl onn ono ont oo- ooc ook ool oon ooo oot ot- otc otk otl otn oto ott tcc tck tcl tcn tco tct tkc tkk tkl tko tkt tlc tlk tll tln tlo tlt tnc tnk tnl tnn tno tnt to- toc tok tol ton too tot ttc ttk ttl ttn tto ttt