fff ffg ffl ffm ffu fgf fgg fgl fgm flf flg fll flm flu fmf fmg fml fmm fmu fuf fug ful fum fuu gff gfl gfm ggg ggm ggu glf glg gll glm glu gmf gmg gml gmm gu- guf gug gul gum guu lff lfg lfl lfm lfu lgf lgg lgl lgm lgu llf llg lll llm llu lmf lmg lml lmm lmu luf lug lul lum luu m-f mff mfg mfl mfm mfu mgf mgl mgm mgu mlf mlg mll mlm mlu mmf mmg mml mmm mmu muf mug mul mum muu uff ufg ufl ufm ufu ugf ugg ugl ugm ugu ulf ulg ull ulm ulu um- umf umg uml umm umu uug uum uuu