a-a a-b a-c aaa aab aac aad aae aag aan aas ab- aba abb abc abd abe abg abn abs ac- aca acb acc acd ace acg acn acs ad- ada adb adc add ade adg adn ads aea aeb aec aed aee aeg aen aes ag- aga agb agc agd age agg agn ags an- ana anb anc and ane ang ann ans as- asa asb asc asd ase asg asn ass baa bab bac bad bae bag ban bas bba bbb bbc bbd bbe bbg bbn bbs bca bcb bcc bcd bce bcg bcn bcs bda bdb bdc bdd bde bdg bds be- bea beb bec bed bee beg ben bes bga bgb bgc bgd bge bgg bgn bgs bna bnb bnc bnd bne bng bnn bns bsa bsb bsc bsd bse bsg bsn bss c-- caa cab cac cad cae cag can cas cba cbb cbc cbd cbe cbg cbn cbs cca ccb ccc ccd cce ccg ccn ccs cda cdb cdc cdd cde cdg cdn cds ce- cea ceb cec ced cee ceg cen ces cga cgb cgc cgd cge cgg cgn cgs cn- cna cnb cnc cnd cne cng cnn cns csa csb csc csd cse csg csn css daa dab dac dad dae dag dan das dba dbb dbc dbd dbe dbg dbn dbs dca dcb dcc dcd dce dcg dcn dcs dda ddb ddc ddd dde ddg ddn dds de- dea deb dec ded dee deg den des dga dgc dgd dge dgg dgn dgs dna dnb dnc dnd dne dng dnn dns dsa dsb dsc dsd dse dsg dsn dss eaa eab eac ead eae eag ean eas eba ebb ebc ebd ebe ebg ebn ebs ec- eca ecb ecc ecd ece ecg ecn ecs ed- eda edb edc edd ede edg edn eds eea eeb eec eed eee eeg een ees ega egb egc egd ege egg egn egs en- ena enb enc end ene eng enn ens es- esa esb esc esd ese esg esn ess g-d gaa gab gac gad gae gag gan gas gba gbc gbd gbe gbg gbn gbs gca gcb gcc gcd gce gcg gcn gcs gda gdb gdc gdd gde gdn gds ge- gea geb gec ged gee geg gen ges gga ggb ggc ggd ggg ggn ggs gna gnb gnc gnd gne gnn gns gsa gsb gsc gsd gse gsg gsn gss naa nab nac nad nae nag nan nas nba nbb nbc nbd nbe nbg nbn nbs nca ncb ncc ncd nce ncg ncn ncs nda ndb ndc ndd nde ndg ndn nds ne- nea neb nec ned nee neg nen nes nga ngb ngc ngd nge ngg ngn ngs nna nnb nnc nne nng nnn nns nsa nsb nsc nsd nse nsg nsn nss saa sab sac sad sae sag san sas sba sbb sbc sbd sbe sbg sbn sbs sca scb scc scd sce scg scn scs sda sdb sdc sdd sde sdg sdn sds se- sea seb sec sed see seg sen ses sga sgb sgc sgd sge sgg sgn sgs sna snb snc snd sne sng snn sns ss- ssa ssb ssc ssd sse ssg ssn sss