a-a a-b a-t aaa aab aae aag aan aao aat aau ab- aba abb abe abg abn abo abt abu aea aeb aee aeg aen aeo aet aeu ag- aga agb age agg agn ago agt agu an- ana anb ane ang ann ano ant anu aoa aob aoe aog aon aoo aot aou at- ata atb ate atg atn ato att atu au- aua aub aue aug aun auo aut b-u baa bab bae bag ban bao bat bau bba bbb bbe bbg bbn bbo bbt bbu be- bea beb bee beg ben beo bet beu bga bgb bge bgg bgn bgo bgt bgu bna bnb bne bng bnn bno bnt bnu boa bob boe bog bon boo bot bou bta btb bte btg btn bto btt btu bua bub bue bug bun buo but buu eaa eab eae eag ean eao eat eau eba ebb ebe ebg ebn ebo ebt ebu eea eeb eee eeg een eeo eet ega egb ege egg egn ego egt egu en- ena enb ene eng enn eno ent enu eo- eoa eob eoe eog eon eoo eot eou eta etb ete etg etn eto ett etu eu- eua eub eue eug eun eut gaa gab gae gag gan gao gat gau gba gbe gbg gbn gbo gbt gbu ge- gea geb gee geg gen geo get geu gga ggb ggg ggn ggo ggt ggu gna gnb gne gnn gno gnt gnu goa gob goe gog gon goo got gou gta gtb gte gtg gtn gto gtt gtu gu- gua gub gue gug gun guo gut guu naa nab nae nag nan nao nat nau nba nbb nbe nbg nbn nbo nbt nbu ne- nea neb nee neg nen neo net neu nga ngb nge ngg ngn ngo ngt ngu nna nnb nne nng nnn nno nnt nnu no- noa nob noe nog non noo not nou nta ntb nte ntg ntn nto ntt ntu nua nub nue nug nun nuo nut nuu oaa oab oae oag oan oao oat oau ob- oba obb obe obg obn obo obt obu oea oeb oee oeg oen oeo oet oga oge ogg ogn ogo ogt on- ona onb one ong onn ono ont onu oo- ooa oob oog oon ooo oot ot- ota otb ote otg otn oto ott otu ou- oua oue oun ouo out taa tab tae tag tan tao tat tau tba tbb tbe tbg tbn tbo tbt tbu te- tea teb tee teg ten teo tet teu tga tgb tge tgg tgn tgo tgt tgu tna tnb tne tng tnn tno tnt to- toa tob toe tog ton too tot tou tta ttb tte ttg ttn tto ttt ttu tua tub tue tug tun tuo tut tuu ua- uaa uab uae uag uan uao uat uau uba ubb ube ubg ubn ubo ubt ubu uea ueb uee ueg uen uet uga ugb uge ugg ugn ugo ugt ugu un- una unb une ung unn uno unt unu uoa uob uoe uog uon uoo uot uta utb ute utn uto utt utu uua uue uug uun uut uuu