-ol c-- ccc ccf cck ccl ccn cco cct cfc cff cfk cfl cfn cfo cft ckc cko ckt cl- clc clf clk cll cln clo clt cn- cnc cnf cnl cnn cno cnt co- coc cof cok col con coo cot ctc ctf ctk ctl ctn cto ctt fcc fcf fck fcl fcn fco fct ffc fff ffk ffl ffn ffo fft fkc fkf fkk fkl fkt flc flf fll fln flo flt fnc fnf fnk fnl fnn fnt foc fof fok fol fon foo fot ftc ftf ftk ftl ftn fto ftt k-t kcc kck kcl kcn kct kfc kff kfo kkc kkk kkl kkn kkt kl- klc klf klo klt kn- knc knf knk knl knn kno knt koc kof kok kol kon koo kot ktc ktf ktk ktl ktn kto ktt lcc lcf lck lcl lcn lco lct lfc lff lfk lfl lfn lfo lft lkl lkt llc llf llk lll lln llo llt lnc lnk lnl lnn lno lnt loc lof lok lol lon loo lot ltc ltf ltk ltl lto ltt ncc ncf nck ncl ncn nco nct nfc nff nfk nfl nfn nfo nft nkc nkf nkk nkn nko nkt nlc nlf nlk nll nln nlo nlt nnc nnf nnk nnl nnn nno nnt no- noc nof nok nol non noo not ntc ntf ntk ntn nto ntt oc- occ ocf ock ocl ocn oco oct of- ofc off ofl ofn ofo oft okc okk okl oko olc olf olk oll oln olo olt on- onc onf onk onl onn ono ont oo- ooc oof ook ool oon ooo oot ot- otc otf otk otl otn oto ott tcc tcf tck tcl tcn tco tct tfc tff tfk tfl tfn tfo tft tkc tkk tkl tko tkt tlc tlf tlk tll tln tlo tlt tnc tnf tnk tnl tnn tno tnt to- toc tof tok tol ton too tot ttc ttf ttk ttl ttn tto ttt