a-a a-b aaa aab aae aag aan aau ab- aba abb abe abg abn abu aea aeb aee aeg aen aeu ag- aga agb age agg agn agu an- ana anb ane ang ann anu au- aua aub aue aug aun b-u baa bab bae bag ban bau bba bbb bbe bbg bbn bbu be- bea beb bee beg ben beu bga bgb bge bgg bgn bgu bna bnb bne bng bnn bnu bua bub bue bug bun buu eaa eab eae eag ean eau eba ebb ebe ebg ebn ebu eea eeb eee eeg een ega egb ege egg egn egu en- ena enb ene eng enn enu eu- eua eub eue eug eun gaa gab gae gag gan gau gba gbe gbg gbn gbu ge- gea geb gee geg gen geu gga ggb ggg ggn ggu gna gnb gne gnn gnu gu- gua gub gue gug gun guu naa nab nae nag nan nau nba nbb nbe nbg nbn nbu ne- nea neb nee neg nen neu nga ngb nge ngg ngn ngu nna nnb nne nng nnn nnu nua nub nue nug nun nuu ua- uaa uab uae uag uan uau uba ubb ube ubg ubn ubu uea ueb uee ueg uen uga ugb uge ugg ugn ugu un- una unb une ung unn unu uua uue uug uun uuu