-er a-a a-b aaa aab aad aae aag aah aar aas ab- aba abb abd abe abg abh abr abs ad- ada adb add ade adg adh adr ads aea aeb aed aee aeg aeh aer aes ag- aga agb agd age agg agh agr ags aha ahb ahd ahe ahg ahh ahr ahs ar- ara arb ard are arg arh arr ars as- asa asb asd ase asg ash asr ass baa bab bad bae bag bah bar bas bba bbb bbd bbe bbg bbh bbr bbs bda bdb bdd bde bdg bdh bdr bds be- bea beb bed bee beg beh ber bes bga bgb bgd bge bgg bgh bgr bgs bha bhb bhd bhe bhg bhh bhr bhs bra brb brd bre brg brh brr brs bsa bsb bsd bse bsg bsh bsr bss daa dab dad dae dag dah dar das dba dbb dbd dbe dbg dbh dbr dbs dda ddb ddd dde ddg ddh ddr dds de- dea deb ded dee deg deh der des dga dgd dge dgg dgh dgr dgs dh- dha dhb dhd dhe dhh dhr dhs dra drb drd dre drg drr drs dsa dsb dsd dse dsg dsh dsr dss eaa eab ead eae eag eah ear eas eba ebb ebd ebe ebg ebh ebr ebs ed- eda edb edd ede edg edh edr eds eea eeb eed eee eeg eer ees ega egb egd ege egg egh egr egs eha ehb ehd ehe ehg ehh ehr ehs era erb erd ere erg erh err ers es- esa esb esd ese esg esh esr ess g-d gaa gab gad gae gag gah gar gas gba gbd gbe gbg gbh gbr gbs gda gdb gdd gde gdh gdr gds ge- gea geb ged gee geg geh ger ges gga ggb ggd ggg ggh ggr ggs gha ghb ghd ghe ghg ghh ghr ghs gra grb grd gre grg grh grr grs gsa gsb gsd gse gsg gsr gss haa hab had hae hag hah har has hba hbb hbd hbe hbg hbh hbr hbs hda hdb hdd hde hdg hdh hdr hds he- hea heb hed hee heg heh her hes hga hgb hge hgg hgh hgr hgs hha hhb hhd hhe hhg hhh hhr hhs hr- hra hrb hrd hre hrg hrh hrr hrs hsa hsb hsd hse hsg hsh hsr hss ra- raa rab rad rae rag rah rar ras rba rbb rbd rbe rbg rbh rbr rbs rda rdb rdd rde rdg rdh rdr rds re- rea reb red ree reg reh rer res rga rgb rgd rge rgg rgh rgr rgs rh- rha rhb rhd rhe rhg rhh rhr rhs rra rrb rrd rrg rrh rrr rrs rsa rsb rsd rse rsg rsh rsr rss saa sab sad sae sag sah sar sas sba sbb sbd sbe sbg sbh sbr sbs sda sdb sdd sde sdg sdh sdr sds se- sea seb sed see seg seh ser ses sga sgb sgd sge sgg sgh sgr sgs sh- sha shb shd she shg shh shr shs sr- sra srb srd sre srg srh srr srs ss- ssa ssb ssd sse ssg ssh ssr sss