a-a aaa aae aaf aag aam aea aee aef aeg aem af- afa afe aff afg afm ag- aga age agf agg agm ama ame amf amg amm eaa eae eaf eag eam eea eee eef eeg eem ef- efa efe eff efg efm ega ege egf egg egm em- ema eme emf emg emm faa fae faf fag fam fea fee fef feg fem ffa ffe fff ffg ffm fga fge fgf fgg fgm fma fme fmf fmg fmm gaa gae gaf gag gam ge- gea gee gef geg gem gfa gfe gff gfm gga ggg ggm gma gme gmf gmg gmm m-f maa mae maf mag mam mea mee mef meg mem mfa mfe mff mfg mfm mga mge mgf mgm mma mme mmf mmg mmm