a-a a-b a-t aaa aab aad aae aag aat ab- aba abb abd abe abg abt ad- ada adb add ade adg adt aea aeb aed aee aeg aet ag- aga agb agd age agg agt at- ata atb atd ate atg att baa bab bad bae bag bat bba bbb bbd bbe bbg bbt bda bdb bdd bde bdg bdt be- bea beb bed bee beg bet bga bgb bgd bge bgg bgt bta btb btd bte btg btt daa dab dad dae dag dat dba dbb dbd dbe dbg dbt dda ddb ddd dde ddg ddt de- dea deb ded dee deg det dga dgd dge dgg dgt dta dtb dtd dte dtg dtt eaa eab ead eae eag eat eba ebb ebd ebe ebg ebt ed- eda edb edd ede edg edt eea eeb eed eee eeg eet ega egb egd ege egg egt eta etb etd ete etg ett g-d gaa gab gad gae gag gat gba gbd gbe gbg gbt gda gdb gdd gde gdt ge- gea geb ged gee geg get gga ggb ggd ggg ggt gta gtb gtd gte gtg gtt taa tab tad tae tag tat tba tbb tbd tbe tbg tbt tda tdb tdd tde tdg tdt te- tea teb ted tee teg tet tga tgb tge tgg tgt tta ttb ttd tte ttg ttt