a-a a-b a-t aaa aab aad aae aag aam aat ab- aba abb abd abe abg abm abt ad- ada adb add ade adg adm adt aea aeb aed aee aeg aem aet ag- aga agb agd age agg agm agt ama amb amd ame amg amm amt at- ata atb atd ate atg atm att baa bab bad bae bag bam bat bba bbb bbd bbe bbg bbm bbt bda bdb bdd bde bdg bdm bdt be- bea beb bed bee beg bem bet bga bgb bgd bge bgg bgm bgt bma bmb bmd bme bmg bmm bmt bta btb btd bte btg btm btt daa dab dad dae dag dam dat dba dbb dbd dbe dbg dbm dbt dda ddb ddd dde ddg ddm ddt de- dea deb ded dee deg dem det dga dgd dge dgg dgm dgt dma dmb dmd dme dmg dmm dmt dta dtb dtd dte dtg dtm dtt eaa eab ead eae eag eam eat eba ebb ebd ebe ebg ebm ebt ed- eda edb edd ede edg edm edt eea eeb eed eee eeg eem eet ega egb egd ege egg egm egt em- ema emb emd eme emg emm emt eta etb etd ete etg etm ett g-d gaa gab gad gae gag gam gat gba gbd gbe gbg gbm gbt gda gdb gdd gde gdm gdt ge- gea geb ged gee geg gem get gga ggb ggd ggg ggm ggt gma gmb gmd gme gmg gmm gmt gta gtb gtd gte gtg gtm gtt maa mab mad mae mag mam mat mba mbb mbd mbe mbg mbm mbt mda mdb mdd mde mdg mdm mdt mea meb med mee meg mem met mga mgb mgd mge mgm mgt mma mmb mmd mme mmg mmm mmt mta mtb mtd mte mtg mtm mtt taa tab tad tae tag tam tat tba tbb tbd tbe tbg tbm tbt tda tdb tdd tde tdg tdm tdt te- tea teb ted tee teg tem tet tga tgb tge tgg tgm tgt tma tmb tmd tme tmg tmm tmt tta ttb ttd tte ttg ttm ttt