a-a a-b aaa aab aad aae aag aam aan aas ab- aba abb abd abe abg abm abn abs ad- ada adb add ade adg adm adn ads aea aeb aed aee aeg aem aen aes ag- aga agb agd age agg agm agn ags ama amb amd ame amg amm amn ams an- ana anb and ane ang anm ann ans as- asa asb asd ase asg asm asn ass baa bab bad bae bag bam ban bas bba bbb bbd bbe bbg bbm bbn bbs bda bdb bdd bde bdg bdm bds be- bea beb bed bee beg bem ben bes bga bgb bgd bge bgg bgm bgn bgs bma bmb bmd bme bmg bmm bmn bms bna bnb bnd bne bng bnn bns bsa bsb bsd bse bsg bsm bsn bss daa dab dad dae dag dam dan das dba dbb dbd dbe dbg dbm dbn dbs dda ddb ddd dde ddg ddm ddn dds de- dea deb ded dee deg dem den des dga dgd dge dgg dgm dgn dgs dma dmb dmd dme dmg dmm dmn dms dna dnb dnd dne dng dnm dnn dns dsa dsb dsd dse dsg dsm dsn dss eaa eab ead eae eag eam ean eas eba ebb ebd ebe ebg ebm ebn ebs ed- eda edb edd ede edg edm edn eds eea eeb eed eee eeg eem een ees ega egb egd ege egg egm egn egs em- ema emb emd eme emg emm emn ems en- ena enb end ene eng enm enn ens es- esa esb esd ese esg esm esn ess g-d gaa gab gad gae gag gam gan gas gba gbd gbe gbg gbm gbn gbs gda gdb gdd gde gdm gdn gds ge- gea geb ged gee geg gem gen ges gga ggb ggd ggg ggm ggn ggs gma gmb gmd gme gmg gmm gmn gms gna gnb gnd gne gnm gnn gns gsa gsb gsd gse gsg gsm gsn gss maa mab mad mae mag mam man mas mba mbb mbd mbe mbg mbm mbs mda mdb mdd mde mdg mdm mdn mds mea meb med mee meg mem men mes mga mgb mgd mge mgm mgn mgs mma mmb mmd mme mmg mmm mmn mms mna mnb mne mng mnm mnn mns msa msb msd mse msg msm msn mss naa nab nad nae nag nam nan nas nba nbb nbd nbe nbg nbm nbn nbs nda ndb ndd nde ndg ndm ndn nds ne- nea neb ned nee neg nem nen nes nga ngb ngd nge ngg ngm ngn ngs nma nmb nmd nme nmg nmm nmn nms nna nnb nne nng nnm nnn nns nsa nsb nsd nse nsg nsm nsn nss saa sab sad sae sag sam san sas sba sbb sbd sbe sbg sbm sbn sbs sda sdb sdd sde sdg sdm sdn sds se- sea seb sed see seg sem sen ses sga sgb sgd sge sgg sgm sgn sgs sma smb smd sme smg smm smn sms sna snb snd sne sng snm snn sns ss- ssa ssb ssd sse ssg ssm ssn sss