-er a-a a-b a-t aaa aab aad aae aag aam aar aas aat ab- aba abb abd abe abg abm abr abs abt ad- ada adb add ade adg adm adr ads adt aea aeb aed aee aeg aem aer aes aet ag- aga agb agd age agg agm agr ags agt ama amb amd ame amg amm amr ams amt ar- ara arb ard are arg arm arr ars art as- asa asb asd ase asg asm asr ass ast at- ata atb atd ate atg atm atr ats att baa bab bad bae bag bam bar bas bat bba bbb bbd bbe bbg bbm bbr bbs bbt bda bdb bdd bde bdg bdm bdr bds bdt be- bea beb bed bee beg bem ber bes bet bga bgb bgd bge bgg bgm bgr bgs bgt bma bmb bmd bme bmg bmm bmr bms bmt bra brb brd bre brg brm brr brs brt bsa bsb bsd bse bsg bsm bsr bss bst bta btb btd bte btg btm btr bts btt daa dab dad dae dag dam dar das dat dba dbb dbd dbe dbg dbm dbr dbs dbt dda ddb ddd dde ddg ddm ddr dds ddt de- dea deb ded dee deg dem der des det dga dgd dge dgg dgm dgr dgs dgt dma dmb dmd dme dmg dmm dmr dms dmt dra drb drd dre drg drm drr drs drt dsa dsb dsd dse dsg dsm dsr dss dst dta dtb dtd dte dtg dtm dtr dts dtt eaa eab ead eae eag eam ear eas eat eba ebb ebd ebe ebg ebm ebr ebs ebt ed- eda edb edd ede edg edm edr eds edt eea eeb eed eee eeg eem eer ees eet ega egb egd ege egg egm egr egs egt em- ema emb emd eme emg emm emr ems emt era erb erd ere erg erm err ers ert es- esa esb esd ese esg esm esr ess est eta etb etd ete etg etm etr ets ett g-d gaa gab gad gae gag gam gar gas gat gba gbd gbe gbg gbm gbr gbs gbt gda gdb gdd gde gdm gdr gds gdt ge- gea geb ged gee geg gem ger ges get gga ggb ggd ggg ggm ggr ggs ggt gma gmb gmd gme gmg gmm gmr gms gmt gra grb grd gre grg grm grr grs grt gsa gsb gsd gse gsg gsm gsr gss gst gta gtb gtd gte gtg gtm gtr gts gtt m-r maa mab mad mae mag mam mar mas mat mba mbb mbd mbe mbg mbm mbr mbs mbt mda mdb mdd mde mdg mdm mdr mds mdt mea meb med mee meg mem mer mes met mga mgb mgd mge mgm mgr mgs mgt mma mmb mmd mme mmg mmm mmr mms mmt mra mrb mrd mre mrg mrm mrr mrs mrt msa msb msd mse msg msm msr mss mst mta mtb mtd mte mtg mtm mtr mts mtt ra- raa rab rad rae rag ram rar ras rat rba rbb rbd rbe rbg rbm rbr rbs rbt rda rdb rdd rde rdg rdm rdr rds rdt re- rea reb red ree reg rem rer res ret rga rgb rgd rge rgg rgr rgs rgt rma rmb rmd rme rmg rmm rmr rms rmt rra rrb rrd rrg rrm rrr rrs rrt rsa rsb rsd rse rsg rsm rsr rss rst rta rtb rtd rte rtg rtm rtr rts rtt saa sab sad sae sag sam sar sas sat sba sbb sbd sbe sbg sbm sbr sbs sbt sda sdb sdd sde sdg sdm sdr sds sdt se- sea seb sed see seg sem ser ses set sga sgb sgd sge sgg sgm sgr sgs sgt sma smb smd sme smg smm smr sms smt sr- sra srb srd sre srg srm srr srs srt ss- ssa ssb ssd sse ssg ssm ssr sss sst sta stb std ste stg stm str sts stt taa tab tad tae tag tam tar tas tat tba tbb tbd tbe tbg tbm tbr tbs tbt tda tdb tdd tde tdg tdm tdr tds tdt te- tea teb ted tee teg tem ter tes tet tga tgb tge tgg tgm tgr tgs tgt tma tmb tmd tme tmg tmm tmr tms tmt tra trb trd tre trg trm trr trs trt tsa tsb tsd tse tsg tsm tsr tss tst tta ttb ttd tte ttg ttm ttr tts ttt