-er a-a a-b aaa aab aad aae aag aam aan aar aas ab- aba abb abd abe abg abm abn abr abs ad- ada adb add ade adg adm adn adr ads aea aeb aed aee aeg aem aen aer aes ag- aga agb agd age agg agm agn agr ags ama amb amd ame amg amm amn amr ams an- ana anb and ane ang anm ann anr ans ar- ara arb ard are arg arm arn arr ars as- asa asb asd ase asg asm asn asr ass baa bab bad bae bag bam ban bar bas bba bbb bbd bbe bbg bbm bbn bbr bbs bda bdb bdd bde bdg bdm bdr bds be- bea beb bed bee beg bem ben ber bes bga bgb bgd bge bgg bgm bgn bgr bgs bma bmb bmd bme bmg bmm bmn bmr bms bna bnb bnd bne bng bnn bnr bns bra brb brd bre brg brm brn brr brs bsa bsb bsd bse bsg bsm bsn bsr bss daa dab dad dae dag dam dan dar das dba dbb dbd dbe dbg dbm dbn dbr dbs dda ddb ddd dde ddg ddm ddn ddr dds de- dea deb ded dee deg dem den der des dga dgd dge dgg dgm dgn dgr dgs dma dmb dmd dme dmg dmm dmn dmr dms dna dnb dnd dne dng dnm dnn dnr dns dra drb drd dre drg drm drn drr drs dsa dsb dsd dse dsg dsm dsn dsr dss eaa eab ead eae eag eam ean ear eas eba ebb ebd ebe ebg ebm ebn ebr ebs ed- eda edb edd ede edg edm edn edr eds eea eeb eed eee eeg eem een eer ees ega egb egd ege egg egm egn egr egs em- ema emb emd eme emg emm emn emr ems en- ena enb end ene eng enm enn enr ens era erb erd ere erg erm ern err ers es- esa esb esd ese esg esm esn esr ess g-d gaa gab gad gae gag gam gan gar gas gba gbd gbe gbg gbm gbn gbr gbs gda gdb gdd gde gdm gdn gdr gds ge- gea geb ged gee geg gem gen ger ges gga ggb ggd ggg ggm ggn ggr ggs gma gmb gmd gme gmg gmm gmn gmr gms gna gnb gnd gne gnm gnn gnr gns gra grb grd gre grg grm grn grr grs gsa gsb gsd gse gsg gsm gsn gsr gss m-r maa mab mad mae mag mam man mar mas mba mbb mbd mbe mbg mbm mbr mbs mda mdb mdd mde mdg mdm mdn mdr mds mea meb med mee meg mem men mer mes mga mgb mgd mge mgm mgn mgr mgs mma mmb mmd mme mmg mmm mmn mmr mms mna mnb mne mng mnm mnn mnr mns mra mrb mrd mre mrg mrm mrn mrr mrs msa msb msd mse msg msm msn msr mss naa nab nad nae nag nam nan nar nas nba nbb nbd nbe nbg nbm nbn nbr nbs nda ndb ndd nde ndg ndm ndn ndr nds ne- nea neb ned nee neg nem nen ner nes nga ngb ngd nge ngg ngm ngn ngs nma nmb nmd nme nmg nmm nmn nmr nms nna nnb nne nng nnm nnn nns nra nrb nrd nre nrg nrm nrn nrr nrs nsa nsb nsd nse nsg nsm nsn nsr nss ra- raa rab rad rae rag ram ran rar ras rba rbb rbd rbe rbg rbm rbn rbr rbs rda rdb rdd rde rdg rdm rdn rdr rds re- rea reb red ree reg rem ren rer res rga rgb rgd rge rgg rgn rgr rgs rma rmb rmd rme rmg rmm rmn rmr rms rna rnb rnd rng rnm rnn rnr rns rra rrb rrd rrg rrm rrn rrr rrs rsa rsb rsd rse rsg rsm rsn rsr rss saa sab sad sae sag sam san sar sas sba sbb sbd sbe sbg sbm sbn sbr sbs sda sdb sdd sde sdg sdm sdn sdr sds se- sea seb sed see seg sem sen ser ses sga sgb sgd sge sgg sgm sgn sgr sgs sma smb smd sme smg smm smn smr sms sna snb snd sne sng snm snn snr sns sr- sra srb srd sre srg srm srn srr srs ss- ssa ssb ssd sse ssg ssm ssn ssr sss