a-a a-b a-t aaa aab aad aae aag aat aau ab- aba abb abd abe abg abt abu ad- ada adb add ade adg adt adu aea aeb aed aee aeg aet aeu ag- aga agb agd age agg agt agu at- ata atb atd ate atg att atu au- aua aub aud aue aug aut b-u baa bab bad bae bag bat bau bba bbb bbd bbe bbg bbt bbu bda bdb bdd bde bdg bdt bdu be- bea beb bed bee beg bet beu bga bgb bgd bge bgg bgt bgu bta btb btd bte btg btt btu bua bub bud bue bug but buu daa dab dad dae dag dat dau dba dbb dbd dbe dbg dbt dbu dda ddb ddd dde ddg ddt ddu de- dea deb ded dee deg det deu dga dgd dge dgg dgt dgu dta dtb dtd dte dtg dtt dtu dua dub dud due dug dut eaa eab ead eae eag eat eau eba ebb ebd ebe ebg ebt ebu ed- eda edb edd ede edg edt edu eea eeb eed eee eeg eet ega egb egd ege egg egt egu eta etb etd ete etg ett etu eu- eua eub eud eue eug eut g-d gaa gab gad gae gag gat gau gba gbd gbe gbg gbt gbu gda gdb gdd gde gdt gdu ge- gea geb ged gee geg get geu gga ggb ggd ggg ggt ggu gta gtb gtd gte gtg gtt gtu gu- gua gub gud gue gug gut guu taa tab tad tae tag tat tau tba tbb tbd tbe tbg tbt tbu tda tdb tdd tde tdg tdt tdu te- tea teb ted tee teg tet teu tga tgb tge tgg tgt tgu tta ttb ttd tte ttg ttt ttu tua tub tud tue tug tut tuu ua- uaa uab uad uae uag uat uau uba ubb ube ubg ubt ubu uda udb udd ude udg udt udu uea ueb ued uee ueg uet uga ugb uge ugg ugt ugu uta utb utd ute utt utu uua uue uug uut uuu