-er a-a a-b a-c aaa aab aac aad aae aag aah aar aas ab- aba abb abc abd abe abg abh abr abs ac- aca acb acc acd ace acg ach acr acs ad- ada adb adc add ade adg adh adr ads aea aeb aec aed aee aeg aeh aer aes ag- aga agb agc agd age agg agh agr ags aha ahb ahc ahd ahe ahg ahh ahr ahs ar- ara arb arc ard are arg arh arr ars as- asa asb asc asd ase asg ash asr ass baa bab bac bad bae bag bah bar bas bba bbb bbc bbd bbe bbg bbh bbr bbs bca bcb bcc bcd bce bcg bch bcr bcs bda bdb bdc bdd bde bdg bdh bdr bds be- bea beb bec bed bee beg beh ber bes bga bgb bgc bgd bge bgg bgh bgr bgs bha bhb bhc bhd bhe bhg bhh bhr bhs bra brb brd bre brg brh brr brs bsa bsb bsc bsd bse bsg bsh bsr bss c-- caa cab cac cad cae cag cah car cas cba cbb cbc cbd cbe cbg cbh cbr cbs cca ccb ccc ccd cce ccg cch ccr ccs cda cdb cdc cdd cde cdg cdh cdr cds ce- cea ceb cec ced cee ceg ceh cer ces cga cgb cgc cgd cge cgg cgh cgr cgs ch- cha chb chc chd che chg chh chr chs cra crb crc crd cre crg crh crr crs csa csb csc csd cse csg csh csr css daa dab dac dad dae dag dah dar das dba dbb dbc dbd dbe dbg dbh dbr dbs dca dcb dcc dcd dce dcg dcr dcs dda ddb ddc ddd dde ddg ddh ddr dds de- dea deb dec ded dee deg deh der des dga dgc dgd dge dgg dgh dgr dgs dh- dha dhb dhc dhd dhe dhh dhr dhs dra drb drc drd dre drg drr drs dsa dsb dsc dsd dse dsg dsh dsr dss eaa eab eac ead eae eag eah ear eas eba ebb ebc ebd ebe ebg ebh ebr ebs ec- eca ecb ecc ecd ece ecg ech ecr ecs ed- eda edb edc edd ede edg edh edr eds eea eeb eec eed eee eeg eer ees ega egb egc egd ege egg egh egr egs eha ehb ehc ehd ehe ehg ehh ehr ehs era erb erc erd ere erg erh err ers es- esa esb esc esd ese esg esh esr ess g-d gaa gab gac gad gae gag gah gar gas gba gbc gbd gbe gbg gbh gbr gbs gca gcb gcc gcd gce gcg gch gcr gcs gda gdb gdc gdd gde gdh gdr gds ge- gea geb gec ged gee geg geh ger ges gga ggb ggc ggd ggg ggh ggr ggs gha ghb ghc ghd ghe ghg ghh ghr ghs gra grb grc grd gre grg grh grr grs gsa gsb gsc gsd gse gsg gsr gss haa hab hac had hae hag hah har has hba hbb hbc hbd hbe hbg hbh hbr hbs hca hcb hcc hcd hce hcg hch hcr hcs hda hdb hdc hdd hde hdg hdh hdr hds he- hea heb hec hed hee heg heh her hes hga hgb hgc hge hgg hgh hgr hgs hha hhb hhc hhd hhe hhg hhh hhr hhs hr- hra hrb hrc hrd hre hrg hrh hrr hrs hsa hsb hsc hsd hse hsg hsh hsr hss ra- raa rab rac rad rae rag rah rar ras rba rbb rbc rbd rbe rbg rbh rbr rbs rca rcb rcc rcd rce rcg rch rcr rcs rda rdb rdc rdd rde rdg rdh rdr rds re- rea reb rec red ree reg reh rer res rga rgb rgc rgd rge rgg rgh rgr rgs rh- rha rhb rhc rhd rhe rhg rhh rhr rhs rra rrb rrc rrd rrg rrh rrr rrs rsa rsb rsc rsd rse rsg rsh rsr rss saa sab sac sad sae sag sah sar sas sba sbb sbc sbd sbe sbg sbh sbr sbs sca scb scc scd sce scg sch scr scs sda sdb sdc sdd sde sdg sdh sdr sds se- sea seb sec sed see seg seh ser ses sga sgb sgc sgd sge sgg sgh sgr sgs sh- sha shb shc shd she shg shh shr shs sr- sra srb src srd sre srg srh srr srs ss- ssa ssb ssc ssd sse ssg ssh ssr sss