-er a-a a-b a-i a-t aaa aab aad aae aag aai aam aar aas aat ab- aba abb abd abe abg abi abm abr abs abt ad- ada adb add ade adg adi adm adr ads adt aea aeb aed aee aeg aei aem aer aes aet ag- aga agb agd age agg agi agm agr ags agt ai- aia aib aid aie aig aii aim air ais ait ama amb amd ame amg ami amm amr ams amt ar- ara arb ard are arg ari arm arr ars art as- asa asb asd ase asg asi asm asr ass ast at- ata atb atd ate atg ati atm atr ats att baa bab bad bae bag bai bam bar bas bat bba bbb bbd bbe bbg bbi bbm bbr bbs bbt bda bdb bdd bde bdg bdi bdm bdr bds bdt be- bea beb bed bee beg bei bem ber bes bet bga bgb bgd bge bgg bgi bgm bgr bgs bgt bi- bia bib bid bie big bii bim bir bis bit bma bmb bmd bme bmg bmi bmm bmr bms bmt bra brb brd bre brg bri brm brr brs brt bsa bsb bsd bse bsg bsi bsm bsr bss bst bta btb btd bte btg bti btm btr bts btt daa dab dad dae dag dai dam dar das dat dba dbb dbd dbe dbg dbi dbm dbr dbs dbt dda ddb ddd dde ddg ddi ddm ddr dds ddt de- dea deb ded dee deg dei dem der des det dga dgd dge dgg dgi dgm dgr dgs dgt di- dia dib did die dig dii dim dir dis dit dma dmb dmd dme dmg dmi dmm dmr dms dmt dra drb drd dre drg dri drm drr drs drt dsa dsb dsd dse dsg dsi dsm dsr dss dst dta dtb dtd dte dtg dti dtm dtr dts dtt eaa eab ead eae eag eai eam ear eas eat eba ebb ebd ebe ebg ebi ebm ebr ebs ebt ed- eda edb edd ede edg edi edm edr eds edt eea eeb eed eee eeg eem eer ees eet ega egb egd ege egg egi egm egr egs egt eia eib eid eie eig eii eim eir eis eit em- ema emb emd eme emg emi emm emr ems emt era erb erd ere erg eri erm err ers ert es- esa esb esd ese esg esi esm esr ess est eta etb etd ete etg eti etm etr ets ett g-d gaa gab gad gae gag gai gam gar gas gat gba gbd gbe gbg gbi gbm gbr gbs gbt gda gdb gdd gde gdi gdm gdr gds gdt ge- gea geb ged gee geg gei gem ger ges get gga ggb ggd ggg ggi ggm ggr ggs ggt gia gib gid gie gig gii gim gir gis git gma gmb gmd gme gmg gmi gmm gmr gms gmt gra grb grd gre grg gri grm grr grs grt gsa gsb gsd gse gsg gsi gsm gsr gss gst gta gtb gtd gte gtg gti gtm gtr gts gtt i-d ia- iaa iab iad iae iag iai iam iar ias iat iba ibb ibd ibe ibg ibi ibm ibr ibs ibt ida idb idd ide idg idi idm idr ids idt ie- iea ied iee ieg iei iem ier ies iet iga igb igd ige igg igi igm igr igs igt iia iib iid iie iii iim iir iis iit im- ima imb imd ime img imi imm ims imt ir- ira irb ird ire irg iri irm irr irs irt is- isa isb isd ise isg isi ism isr iss ist ita itb itd ite itg iti itm its itt m-r maa mab mad mae mag mai mam mar mas mat mba mbb mbd mbe mbg mbi mbm mbr mbs mbt mda mdb mdd mde mdg mdi mdm mdr mds mdt mea meb med mee meg mei mem mer mes met mga mgb mgd mge mgi mgm mgr mgs mgt mi- mia mib mid mie mig mii mim mir mis mit mma mmb mmd mme mmg mmi mmm mmr mms mmt mra mrb mrd mre mrg mri mrm mrr mrs mrt msa msb msd mse msg msi msm msr mss mst mta mtb mtd mte mtg mti mtm mtr mts mtt ra- raa rab rad rae rag rai ram rar ras rat rba rbb rbd rbe rbg rbi rbm rbr rbs rbt rda rdb rdd rde rdg rdi rdm rdr rds rdt re- rea reb red ree reg rei rem rer res ret rga rgb rgd rge rgg rgi rgr rgs rgt ria rib rid rie rig rii rim rir ris rit rma rmb rmd rme rmg rmi rmm rmr rms rmt rra rrb rrd rrg rri rrm rrr rrs rrt rsa rsb rsd rse rsg rsi rsm rsr rss rst rta rtb rtd rte rtg rti rtm rtr rts rtt saa sab sad sae sag sai sam sar sas sat sba sbb sbd sbe sbg sbi sbm sbr sbs sbt sda sdb sdd sde sdg sdi sdm sdr sds sdt se- sea seb sed see seg sei sem ser ses set sga sgb sgd sge sgg sgi sgm sgr sgs sgt sia sib sid sie sig sii sim sir sis sit sma smb smd sme smg smi smm smr sms smt sr- sra srb srd sre srg sri srm srr srs srt ss- ssa ssb ssd sse ssg ssi ssm ssr sss sst sta stb std ste stg sti stm str sts stt taa tab tad tae tag tai tam tar tas tat tba tbb tbd tbe tbg tbi tbm tbr tbs tbt tda tdb tdd tde tdg tdi tdm tdr tds tdt te- tea teb ted tee teg tei tem ter tes tet tga tgb tge tgg tgi tgm tgr tgs tgt tia tib tid tie tig tii tim tir tis tit tma tmb tmd tme tmg tmi tmm tmr tms tmt tra trb trd tre trg tri trm trr