fff ffg ffk ffl ffn ffu fgf fgg fgl fgn fkf fkg fkk fkl flf flg fll fln flu fnf fng fnk fnl fnn fnu fuf fug fuk ful fun fuu gff gfk gfl ggg ggn ggu gkn glf glg glk gll gln glu gnf gnl gnn gnu gu- guf gug guk gul gun guu kff kfg kfu kgf kgl kgu kkk kkl kkn kku kl- klf klg klu kn- knf kng knk knl knn knu kug kuk kul kun kuu lff lfg lfk lfl lfn lfu lgf lgg lgk lgl lgn lgu lkg lkl llf llg llk lll lln llu lng lnk lnl lnn lnu luf lug luk lul lun luu nff nfk nfl nfn nfu ngf ngg ngk ngl ngn ngu nkf nkk nkn nku nlf nlg nlk nll nln nlu nnf nng nnk nnl nnn nnu nug nuk nul nun nuu uff ufg ufl ufn ufu ugf ugg ugk ugl ugn ugu ukf ukk ukl ukn uku ulf ulg ulk ull uln ulu un- unf ung unk unl unn unu uug uun uuu