a-a a-t aaa aaf aag aam aan aat af- afa aff afg afm afn aft ag- aga agf agg agm agn agt ama amf amg amm amn amt an- ana anf ang anm ann ant at- ata atf atg atm atn att faa faf fag fam fan fat ffa fff ffg ffm ffn fft fga fgf fgg fgm fgn fgt fma fmf fmg fmm fmn fmt fna fnf fng fnm fnn fnt fta ftf ftg ftm ftn ftt gaa gaf gag gam gan gat gfa gff gfm gft gga ggg ggm ggn ggt gma gmf gmg gmm gmn gmt gna gnf gnm gnn gnt gta gtf gtg gtm gtn gtt m-f maa maf mag mam man mat mfa mff mfg mfm mfn mft mga mgf mgm mgn mgt mma mmf mmg mmm mmn mmt mna mnf mng mnm mnn mnt mta mtf mtg mtm mtn mtt naa naf nag nam nan nat nfa nff nfn nft nga ngf ngg ngm ngn ngt nma nmg nmm nmn nmt nna nnf nng nnm nnn nnt nta ntf ntg ntm ntn ntt taa taf tag tam tan tat tfa tff tfg tfm tfn tft tga tgf tgg tgm tgn tgt tma tmf tmg tmm tmn tmt tna tnf tng tnm tnn tnt tta ttf ttg ttm ttn ttt