a-a a-b a-i a-t aaa aab aae aag aai aam aan aat aax ab- aba abb abe abg abi abm abn abt abx aea aeb aee aeg aei aem aen aet aex ag- aga agb age agg agi agm agn agt agx ai- aia aib aie aig aii aim ain ait aix ama amb ame amg ami amm amn amt amx an- ana anb ane ang ani anm ann ant anx at- ata atb ate atg ati atm atn att atx ax- axa axe axi axm axn axt axx baa bab bae bag bai bam ban bat bax bba bbb bbe bbg bbi bbm bbn bbt bbx be- bea beb bee beg bei bem ben bet bex bga bgb bge bgg bgi bgm bgn bgt bgx bi- bia bib bie big bii bim bin bit bix bma bmb bme bmg bmi bmm bmn bmt bmx bna bnb bne bng bni bnn bnt bnx bta btb bte btg bti btm btn btt btx bxb bxi bxm bxn bxx eaa eab eae eag eai eam ean eat eax eba ebb ebe ebg ebi ebm ebn ebt ebx eea eeb eee eeg eem een eet eex ega egb ege egg egi egm egn egt egx eia eib eie eig eii eim ein eit eix em- ema emb eme emg emi emm emn emt emx en- ena enb ene eng eni enm enn ent eta etb ete etg eti etm etn ett etx ex- exa exe exi ext exx gaa gab gae gag gai gam gan gat gba gbe gbg gbi gbm gbn gbt gbx ge- gea geb gee geg gei gem gen get gex gga ggb ggg ggi ggm ggn ggt gia gib gie gig gii gim gin git gma gmb gme gmg gmi gmm gmn gmt gmx gna gnb gne gni gnm gnn gnt gta gtb gte gtg gti gtm gtn gtt gtx gxa gxt ia- iaa iab iae iag iai iam ian iat iba ibb ibe ibg ibi ibm ibn ibt ibx ie- iea iee ieg iei iem ien iet iex iga igb ige igg igi igm ign igt iia iib iie iii iim iin iit iix im- ima imb ime img imi imm imn imt imx in- ina inb ine ing ini inm inn int inx ita itb ite itg iti itm itn itt itx ixe ixi ixn maa mab mae mag mai mam man mat max mba mbb mbe mbg mbi mbm mbt mbx mea meb mee meg mei mem men met mex mga mgb mge mgi mgm mgn mgt mgx mi- mia mib mie mig mii mim min mit mix mma mmb mme mmg mmi mmm mmn mmt mmx mna mnb mne mng mni mnm mnn mnt mta mtb mte mtg mti mtm mtn mtt mtx mxa mxi mxn n-i naa nab nae nag nai nam nan nat nax nba nbb nbe nbg nbi nbm nbn nbt nbx ne- nea neb nee neg nei nem nen net nex nga ngb nge ngg ngi ngm ngn ngt nia nib nie nig nii nim nin nit nix nma nmb nme nmg nmi nmm nmn nmt nna nnb nne nng nni nnm nnn nnt nta ntb nte ntg nti ntm ntn ntt ntx nxt t-x taa tab tae tag tai tam tan tat tax tba tbb tbe tbg tbi tbm tbn tbt te- tea teb tee teg tei tem ten tet tex tga tgb tge tgg tgi tgm tgn tgt tia tib tie tig tii tim tin tit tix tma tmb tme tmg tmi tmm tmn tmt tmx tna tnb tne tng tni tnm tnn tnt tnx tta ttb tte ttg tti ttm ttn ttt ttx txe txi txn txt xaa xag xam xan xat xbe xbx xee xeg xem xen xet xex xge xgi xia xie xii xin xit xix xma xmg xmi xmm xmt xmx xna xti xtm xtx xxi xxx