-ol fff ffk ffl ffn ffo fft fkf fkk fkl fkt flf fll fln flo flt fnf fnk fnl fnn fnt fof fok fol fon foo fot ftf ftk ftl ftn fto ftt k-t kff kfo kkk kkl kkn kkt kl- klf klo klt kn- knf knk knl knn kno knt kof kok kol kon koo kot ktf ktk ktl ktn kto ktt lff lfk lfl lfn lfo lft lkl lkt llf llk lll lln llo llt lnk lnl lnn lno lnt lof lok lol lon loo lot ltf ltk ltl lto ltt nff nfk nfl nfn nfo nft nkf nkk nkn nko nkt nlf nlk nll nln nlo nlt nnf nnk nnl nnn nno nnt no- nof nok nol non noo not ntf ntk ntn nto ntt of- off ofl ofn ofo oft okk okl oko olf olk oll oln olo olt on- onf onk onl onn ono ont oo- oof ook ool oon ooo oot ot- otf otk otl otn oto ott tff tfk tfl tfn tfo tft tkk tkl tko tkt tlf tlk tll tln tlo tlt tnf tnk tnl tnn tno tnt to- tof tok tol ton too tot ttf ttk ttl ttn tto ttt