a-a a-b aaa aab aae aag aah aan aau ab- aba abb abe abg abh abn abu aea aeb aee aeg aeh aen aeu ag- aga agb age agg agh agn agu aha ahb ahe ahg ahh ahn ahu an- ana anb ane ang anh ann anu au- aua aub aue aug auh aun b-u baa bab bae bag bah ban bau bba bbb bbe bbg bbh bbn bbu be- bea beb bee beg beh ben beu bga bgb bge bgg bgh bgn bgu bha bhb bhe bhg bhh bhu bna bnb bne bng bnn bnu bua bub bue bug buh bun buu eaa eab eae eag eah ean eau eba ebb ebe ebg ebh ebn ebu eea eeb eee eeg een ega egb ege egg egh egn egu eha ehb ehe ehg ehh ehn ehu en- ena enb ene eng enh enn enu eu- eua eub eue eug eun gaa gab gae gag gah gan gau gba gbe gbg gbh gbn gbu ge- gea geb gee geg geh gen geu gga ggb ggg ggh ggn ggu gha ghb ghe ghg ghh ghn gna gnb gne gnn gnu gu- gua gub gue gug gun guu haa hab hae hag hah han hau hba hbb hbe hbg hbh hbn hbu he- hea heb hee heg heh hen heu hga hgb hge hgg hgh hgn hgu hha hhb hhe hhg hhh hhn hhu hna hnb hne hng hnh hnn hnu hua hub hue hug huh hun huu naa nab nae nag nah nan nau nba nbb nbe nbg nbn nbu ne- nea neb nee neg neh nen neu nga ngb nge ngg ngh ngn ngu nha nhb nhe nhg nhh nhn nhu nna nnb nne nng nnh nnn nnu nua nub nue nug nuh nun nuu ua- uaa uab uae uag uah uan uau uba ubb ube ubg ubh ubn ubu uea ueb uee ueg ueh uen uga ugb uge ugg ugh ugn ugu uha uhb uhe uhh uhu un- una unb une ung unh unn unu uua uue uug uun uuu