a-a a-b aaa aab aae aag aah aan aau aax ab- aba abb abe abg abh abn abu abx aea aeb aee aeg aeh aen aeu aex ag- aga agb age agg agh agn agu agx aha ahb ahe ahg ahh ahn ahu ahx an- ana anb ane ang anh ann anu anx au- aua aub aue aug auh aun aux ax- axa axe axh axn axx b-u baa bab bae bag bah ban bau bax bba bbb bbe bbg bbh bbn bbu bbx be- bea beb bee beg beh ben beu bex bga bgb bge bgg bgh bgn bgu bgx bha bhb bhe bhg bhh bhu bhx bna bnb bne bng bnn bnu bnx bua bub bue bug buh bun buu bux bxb bxn bxx eaa eab eae eag eah ean eau eax eba ebb ebe ebg ebh ebn ebu ebx eea eeb eee eeg een eex ega egb ege egg egh egn egu egx eha ehb ehe ehg ehh ehn ehu en- ena enb ene eng enh enn enu eu- eua eub eue eug eun eux ex- exa exe exh exu exx gaa gab gae gag gah gan gau gba gbe gbg gbh gbn gbu gbx ge- gea geb gee geg geh gen geu gex gga ggb ggg ggh ggn ggu gha ghb ghe ghg ghh ghn gna gnb gne gnn gnu gu- gua gub gue gug gun guu gxa haa hab hae hag hah han hau hax hba hbb hbe hbg hbh hbn hbu hbx he- hea heb hee heg heh hen heu hex 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 hux naa nab nae nag nah nan nau nax nba nbb nbe nbg nbn nbu nbx ne- nea neb nee neg neh nen neu nex 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 nux ua- uaa uab uae uag uah uan uau uba ubb ube ubg ubh ubn ubu ubx uea ueb uee ueg ueh uen uga ugb uge ugg ugh ugn ugu ugx uha uhb uhe uhh uhu un- una unb une ung unh unn unu unx uua uue uug uun uuu uxb uxu xaa xag xan xau xbe xbx xee xeg xen xeu xex xge xna xnu xue xun xxx