a-a a-b a-i a-t aaa aab aag aai aam aan aar aat ab- aba abb abg abi abm abn abr abt ag- aga agb agg agi agm agn agr agt ai- aia aib aig aii aim ain air ait ama amb amg ami amm amn amr amt an- ana anb ang ani anm ann anr ant ar- ara arb arg ari arm arn arr art at- ata atb atg ati atm atn atr att baa bab bag bai bam ban bar bat bba bbb bbg bbi bbm bbn bbr bbt bga bgb bgg bgi bgm bgn bgr bgt bi- bia bib big bii bim bin bir bit bma bmb bmg bmi bmm bmn bmr bmt bna bnb bng bni bnn bnr bnt bra brb brg bri brm brn brr brt bta btb btg bti btm btn btr btt gaa gab gag gai gam gan gar gat gba gbg gbi gbm gbn gbr gbt gga ggb ggg ggi ggm ggn ggr ggt gia gib gig gii gim gin gir git gma gmb gmg gmi gmm gmn gmr gmt gna gnb gni gnm gnn gnr gnt gra grb grg gri grm grn grr grt gta gtb gtg gti gtm gtn gtr gtt ia- iaa iab iag iai iam ian iar iat iba ibb ibg ibi ibm ibn ibr ibt iga igb igg igi igm ign igr igt iia iib iii iim iin iir iit im- ima imb img imi imm imn imt in- ina inb ing ini inm inn inr int ir- ira irb irg iri irm irn irr irt ita itb itg iti itm itn itt m-r maa mab mag mai mam man mar mat mba mbb mbg mbi mbm mbr mbt mga mgb mgi mgm mgn mgr mgt mi- mia mib mig mii mim min mir mit mma mmb mmg mmi mmm mmn mmr mmt mna mnb mng mni mnm mnn mnr mnt mra mrb mrg mri mrm mrn mrr mrt mta mtb mtg mti mtm mtn mtr mtt n-i naa nab nag nai nam nan nar nat nba nbb nbg nbi nbm nbn nbr nbt nga ngb ngg ngi ngm ngn ngt nia nib nig nii nim nin nir nit nma nmb nmg nmi nmm nmn nmr nmt nna nnb nng nni nnm nnn nnt nra nrb nrg nri nrm nrn nrr nrt nta ntb ntg nti ntm ntn ntr ntt ra- raa rab rag rai ram ran rar rat rba rbb rbg rbi rbm rbn rbr rbt rga rgb rgg rgi rgn rgr rgt ria rib rig rii rim rin rir rit rma rmb rmg rmi rmm rmn rmr rmt rna rnb rng rni rnm rnn rnr rnt rra rrb rrg rri rrm rrn rrr rrt rta rtb rtg rti rtm rtn rtr rtt taa tab tag tai tam tan tar tat tba tbb tbg tbi tbm tbn tbr tbt tga tgb tgg tgi tgm tgn tgr tgt tia tib tig tii tim tin tir tit tma tmb tmg tmi tmm tmn tmr tmt tna tnb tng tni tnm tnn tnr tnt tra trb trg tri trm trn trr trt tta ttb ttg tti ttm ttn ttr ttt