a-a a-b a-i a-t aaa aab aae aag aai aat aau ab- aba abb abe abg abi abt abu aea aeb aee aeg aei aet aeu ag- aga agb age agg agi agt agu ai- aia aib aie aig aii ait aiu at- ata atb ate atg ati att atu au- aua aub aue aug aui aut b-u baa bab bae bag bai bat bau bba bbb bbe bbg bbi bbt bbu be- bea beb bee beg bei bet beu bga bgb bge bgg bgi bgt bgu bi- bia bib bie big bii bit biu bta btb bte btg bti btt btu bua bub bue bug bui but buu eaa eab eae eag eai eat eau eba ebb ebe ebg ebi ebt ebu eea eeb eee eeg eet ega egb ege egg egi egt egu eia eib eie eig eii eit eiu eta etb ete etg eti ett etu eu- eua eub eue eug eui eut gaa gab gae gag gai gat gau gba gbe gbg gbi gbt gbu ge- gea geb gee geg gei get geu gga ggb ggg ggi ggt ggu gia gib gie gig gii git giu gta gtb gte gtg gti gtt gtu gu- gua gub gue gug gui gut guu ia- iaa iab iae iag iai iat iau iba ibb ibe ibg ibi ibt ibu ie- iea iee ieg iei iet iga igb ige igg igi igt igu iia iib iie iii iit iiu ita itb ite itg iti itt itu iu- iua iub iue iug iui iut taa tab tae tag tai tat tau tba tbb tbe tbg tbi tbt tbu te- tea teb tee teg tei tet teu tga tgb tge tgg tgi tgt tgu tia tib tie tig tii tit tiu tta ttb tte ttg tti ttt ttu tua tub tue tug tui tut tuu ua- uaa uab uae uag uai uat uau uba ubb ube ubg ubi ubt ubu uea ueb uee ueg uei uet uga ugb uge ugg ugi ugt ugu uia uib uie uig uii uit uiu uta utb ute uti utt utu uua uue uug uut uuu