a-a a-b aaa aab aad aae aag aan aas ab- aba abb abd abe abg abn abs ad- ada adb add ade adg adn ads aea aeb aed aee aeg aen aes ag- aga agb agd age agg agn ags an- ana anb and ane ang ann ans as- asa asb asd ase asg asn ass baa bab bad bae bag ban bas bba bbb bbd bbe bbg bbn bbs bda bdb bdd bde bdg bds be- bea beb bed bee beg ben bes bga bgb bgd bge bgg bgn bgs bna bnb bnd bne bng bnn bns bsa bsb bsd bse bsg bsn bss daa dab dad dae dag dan das dba dbb dbd dbe dbg dbn dbs dda ddb ddd dde ddg ddn dds de- dea deb ded dee deg den des dga dgd dge dgg dgn dgs dna dnb dnd dne dng dnn dns dsa dsb dsd dse dsg dsn dss eaa eab ead eae eag ean eas eba ebb ebd ebe ebg ebn ebs ed- eda edb edd ede edg edn eds eea eeb eed eee eeg een ees ega egb egd ege egg egn egs en- ena enb end ene eng enn ens es- esa esb esd ese esg esn ess g-d gaa gab gad gae gag gan gas gba gbd gbe gbg gbn gbs gda gdb gdd gde gdn gds ge- gea geb ged gee geg gen ges gga ggb ggd ggg ggn ggs gna gnb gnd gne gnn gns gsa gsb gsd gse gsg gsn gss naa nab nad nae nag nan nas nba nbb nbd nbe nbg nbn nbs nda ndb ndd nde ndg ndn nds ne- nea neb ned nee neg nen nes nga ngb ngd nge ngg ngn ngs nna nnb nne nng nnn nns nsa nsb nsd nse nsg nsn nss saa sab sad sae sag san sas sba sbb sbd sbe sbg sbn sbs sda sdb sdd sde sdg sdn sds se- sea seb sed see seg sen ses sga sgb sgd sge sgg sgn sgs sna snb snd sne sng snn sns ss- ssa ssb ssd sse ssg ssn sss