-er a-a a-b aaa aab aad aae aag aam aar aas ab- aba abb abd abe abg abm abr abs ad- ada adb add ade adg adm adr ads aea aeb aed aee aeg aem aer aes ag- aga agb agd age agg agm agr ags ama amb amd ame amg amm amr ams ar- ara arb ard are arg arm arr ars as- asa asb asd ase asg asm asr ass baa bab bad bae bag bam bar bas bba bbb bbd bbe bbg bbm bbr bbs bda bdb bdd bde bdg bdm bdr bds be- bea beb bed bee beg bem ber bes bga bgb bgd bge bgg bgm bgr bgs bma bmb bmd bme bmg bmm bmr bms bra brb brd bre brg brm brr brs bsa bsb bsd bse bsg bsm bsr bss daa dab dad dae dag dam dar das dba dbb dbd dbe dbg dbm dbr dbs dda ddb ddd dde ddg ddm ddr dds de- dea deb ded dee deg dem der des dga dgd dge dgg dgm dgr dgs dma dmb dmd dme dmg dmm dmr dms dra drb drd dre drg drm drr drs dsa dsb dsd dse dsg dsm dsr dss eaa eab ead eae eag eam ear eas eba ebb ebd ebe ebg ebm ebr ebs ed- eda edb edd ede edg edm edr eds eea eeb eed eee eeg eem eer ees ega egb egd ege egg egm egr egs em- ema emb emd eme emg emm emr ems era erb erd ere erg erm err ers es- esa esb esd ese esg esm esr ess g-d gaa gab gad gae gag gam gar gas gba gbd gbe gbg gbm gbr gbs gda gdb gdd gde gdm gdr gds ge- gea geb ged gee geg gem ger ges gga ggb ggd ggg ggm ggr ggs gma gmb gmd gme gmg gmm gmr gms gra grb grd gre grg grm grr grs gsa gsb gsd gse gsg gsm gsr gss m-r maa mab mad mae mag mam mar mas mba mbb mbd mbe mbg mbm mbr mbs mda mdb mdd mde mdg mdm mdr mds mea meb med mee meg mem mer mes mga mgb mgd mge mgm mgr mgs mma mmb mmd mme mmg mmm mmr mms mra mrb mrd mre mrg mrm mrr mrs msa msb msd mse msg msm msr mss ra- raa rab rad rae rag ram rar ras rba rbb rbd rbe rbg rbm rbr rbs rda rdb rdd rde rdg rdm rdr rds re- rea reb red ree reg rem rer res rga rgb rgd rge rgg rgr rgs rma rmb rmd rme rmg rmm rmr rms rra rrb rrd rrg rrm rrr rrs rsa rsb rsd rse rsg rsm rsr rss saa sab sad sae sag sam sar sas sba sbb sbd sbe sbg sbm sbr sbs sda sdb sdd sde sdg sdm sdr sds se- sea seb sed see seg sem ser ses sga sgb sgd sge sgg sgm sgr sgs sma smb smd sme smg smm smr sms sr- sra srb srd sre srg srm srr srs ss- ssa ssb ssd sse ssg ssm ssr sss