-al a-a a-b a-i a-t aaa aab aae aag aai aal aan aat ab- aba abb abe abg abi abl abn abt aea aeb aee aeg aei ael aen aet ag- aga agb age agg agi agl agn agt ai- aia aib aie aig aii ail ain ait al- ala alb ale alg ali all aln alt an- ana anb ane ang ani anl ann ant at- ata atb ate atg ati atl atn att baa bab bae bag bai bal ban bat bba bbb bbe bbg bbi bbl bbn bbt be- bea beb bee beg bei bel ben bet bga bgb bge bgg bgi bgl bgn bgt bi- bia bib bie big bii bil bin bit bla blb ble blg bli bll bln blt bna bnb bne bng bni bnl bnn bnt bta btb bte btg bti btl btn btt eaa eab eae eag eai eal ean eat eba ebb ebe ebg ebi ebl ebn ebt eea eeb eee eeg eel een eet ega egb ege egg egi egl egn egt eia eib eie eig eii eil ein eit ela elb ele elg eli ell eln elt en- ena enb ene eng eni enl enn ent eta etb ete etg eti etl etn ett gaa gab gae gag gai gal gan gat gba gbe gbg gbi gbl gbn gbt ge- gea geb gee geg gei gel gen get gga ggb ggg ggi ggn ggt gia gib gie gig gii gil gin git gla glb gle glg gli gll gln glt gna gnb gne gni gnl gnn gnt gta gtb gte gtg gti gtl gtn gtt ia- iaa iab iae iag iai ial ian iat iba ibb ibe ibg ibi ibl ibn ibt ie- iea iee ieg iei iel ien iet iga igb ige igg igi igl ign igt iia iib iie iii iil iin iit il- ila ilb ile ilg ili ill iln ilt in- ina inb ine ing ini inl inn int ita itb ite itg iti itl itn itt la- laa lab lae lag lai lal lan lat lba lbb lbe lbg lbi lbl lbt lea leb lee leg lei lel len let lga lgb lge lgg lgi lgl lgn lgt lia lib lie lig lii lil lin lit lla llb lle llg lli lll lln llt lna lnb lne lng lni lnl lnn lnt lta ltb lte ltg lti ltl ltt n-i naa nab nae nag nai nal nan nat nba nbb nbe nbg nbi nbl nbn nbt ne- nea neb nee neg nei nel nen net nga ngb nge ngg ngi ngl ngn ngt nia nib nie nig nii nil nin nit nla nlb nle nlg nli nll nln nlt nna nnb nne nng nni nnl nnn nnt nta ntb nte ntg nti ntn ntt taa tab tae tag tai tal tan tat tba tbb tbe tbg tbi tbl tbn tbt te- tea teb tee teg tei tel ten tet tga tgb tge tgg tgi tgl tgn tgt tia tib tie tig tii til tin tit tla tle tlg tli tll tln tlt tna tnb tne tng tni tnl tnn tnt tta ttb tte ttg tti ttl ttn ttt