a-a a-b aaa aab aae aag aan aao aau ab- aba abb abe abg abn abo abu aea aeb aee aeg aen aeo aeu ag- aga agb age agg agn ago agu an- ana anb ane ang ann ano anu aoa aob aoe aog aon aoo aou au- aua aub aue aug aun auo b-u baa bab bae bag ban bao bau bba bbb bbe bbg bbn bbo bbu be- bea beb bee beg ben beo beu bga bgb bge bgg bgn bgo bgu bna bnb bne bng bnn bno bnu boa bob boe bog bon boo bou bua bub bue bug bun buo buu eaa eab eae eag ean eao eau eba ebb ebe ebg ebn ebo ebu eea eeb eee eeg een eeo ega egb ege egg egn ego egu en- ena enb ene eng enn eno enu eo- eoa eob eoe eog eon eoo eou eu- eua eub eue eug eun gaa gab gae gag gan gao gau gba gbe gbg gbn gbo gbu ge- gea geb gee geg gen geo geu gga ggb ggg ggn ggo ggu gna gnb gne gnn gno gnu goa gob goe gog gon goo gou gu- gua gub gue gug gun guo guu naa nab nae nag nan nao nau nba nbb nbe nbg nbn nbo nbu ne- nea neb nee neg nen neo neu nga ngb nge ngg ngn ngo ngu nna nnb nne nng nnn nno nnu no- noa nob noe nog non noo nou nua nub nue nug nun nuo nuu oaa oab oae oag oan oao oau ob- oba obb obe obg obn obo obu oea oeb oee oeg oen oeo oga oge ogg ogn ogo on- ona onb one ong onn ono onu oo- ooa oob oog oon ooo ou- oua oue oun ouo ua- uaa uab uae uag uan uao uau uba ubb ube ubg ubn ubo ubu uea ueb uee ueg uen uga ugb uge ugg ugn ugo ugu un- una unb une ung unn uno unu uoa uob uoe uog uon uoo uua uue uug uun uuu