a-a a-b a-c a-t aaa aab aac aae aag aan aao aat aau ab- aba abb abc abe abg abn abo abt abu ac- aca acb acc ace acg acn aco act acu aea aeb aec aee aeg aen aeo aet aeu ag- aga agb agc age agg agn ago agt agu an- ana anb anc ane ang ann ano ant anu aoa aob aoc aoe aog aon aoo aot aou at- ata atb atc ate atg atn ato att atu au- aua aub auc aue aug aun auo aut b-u baa bab bac bae bag ban bao bat bau bba bbb bbc bbe bbg bbn bbo bbt bbu bca bcb bcc bce bcg bcn bco bct bcu be- bea beb bec bee beg ben beo bet beu bga bgb bgc bge bgg bgn bgo bgt bgu bna bnb bnc bne bng bnn bno bnt bnu boa bob boc boe bog bon boo bot bou bta btb btc bte btg btn bto btt btu bua bub buc bue bug bun buo but buu c-- caa cab cac cae cag can cao cat cau cba cbb cbc cbe cbg cbn cbo cbt cbu cca ccb ccc cce ccg ccn cco cct ccu ce- cea ceb cec cee ceg cen ceo cet ceu cga cgb cgc cge cgg cgn cgo cgt cgu cn- cna cnb cnc cne cng cnn cno cnt cnu co- coa cob coc coe cog con coo cot cou cta ctb ctc cte ctg ctn cto ctt ctu cua cub cuc cue cug cun cuo cut cuu eaa eab eac eae eag ean eao eat eau eba ebb ebc ebe ebg ebn ebo ebt ebu ec- eca ecb ecc ece ecg ecn eco ect ecu eea eeb eec eee eeg een eeo eet ega egb egc ege egg egn ego egt egu en- ena enb enc ene eng enn eno ent enu eo- eoa eob eoc eoe eog eon eoo eot eou eta etb etc ete etg etn eto ett etu eu- eua eub euc eue eug eun eut gaa gab gac gae gag gan gao gat gau gba gbc gbe gbg gbn gbo gbt gbu gca gcb gcc gce gcg gcn gco gct gcu ge- gea geb gec gee geg gen geo get geu gga ggb ggc ggg ggn ggo ggt ggu gna gnb gnc gne gnn gno gnt gnu goa gob goc goe gog gon goo got gou gta gtb gtc gte gtg gtn gto gtt gtu gu- gua gub guc gue gug gun guo gut guu naa nab nac nae nag nan nao nat nau nba nbb nbc nbe nbg nbn nbo nbt nbu nca ncb ncc nce ncg ncn nco nct ncu ne- nea neb nec nee neg nen neo net neu nga ngb ngc nge ngg ngn ngo ngt ngu nna nnb nnc nne nng nnn nno nnt nnu no- noa nob noc noe nog non noo not nou nta ntb ntc nte ntg ntn nto ntt ntu nua nub nuc nue nug nun nuo nut nuu oaa oab oac oae oag oan oao oat oau ob- oba obb obc obe obg obn obo obt obu oc- oca ocb occ ocg ocn oco oct ocu oea oeb oec oee oeg oen oeo oet oga ogc oge ogg ogn ogo ogt on- ona onb onc one ong onn ono ont onu oo- ooa oob ooc oog oon ooo oot ot- ota otb otc ote otg otn oto ott otu ou- oua ouc oue oun ouo out taa tab tac tae tag tan tao tat tau tba tbb tbc tbe tbg tbn tbo tbt tbu tca tcb tcc tce tcg tcn tco tct tcu te- tea teb tec tee teg ten teo tet teu tga tgb tgc tge tgg tgn tgo tgt tgu tna tnb tnc tne tng tnn tno tnt to- toa tob toc toe tog ton too tot tou tta ttb ttc tte ttg ttn tto ttt ttu tua tub tuc tue tug tun tuo tut tuu ua- uaa uab uac uae uag uan uao uat uau uba ubb ubc ube ubg ubn ubo ubt ubu uca ucb ucc uce ucg ucn uco uct ucu uea ueb uec uee ueg uen uet uga ugb ugc uge ugg ugn ugo ugt ugu un- una unb unc une ung unn uno unt unu uoa uob uoc uoe uog uon uoo uot uta utb utc ute utn uto utt utu uua uuc uue uug uun uut uuu