-er a-a a-b a-i aaa aab aad aae aai aam aar aas ab- aba abb abd abe abi abm abr abs ad- ada adb add ade adi adm adr ads aea aeb aed aee aei aem aer aes ai- aia aib aid aie aii aim air ais ama amb amd ame ami amm amr ams ar- ara arb ard are ari arm arr ars as- asa asb asd ase asi asm asr ass baa bab bad bae bai bam bar bas bba bbb bbd bbe bbi bbm bbr bbs bda bdb bdd bde bdi bdm bdr bds be- bea beb bed bee bei bem ber bes bi- bia bib bid bie bii bim bir bis bma bmb bmd bme bmi bmm bmr bms bra brb brd bre bri brm brr brs bsa bsb bsd bse bsi bsm bsr bss daa dab dad dae dai dam dar das dba dbb dbd dbe dbi dbm dbr dbs dda ddb ddd dde ddi ddm ddr dds de- dea deb ded dee dei dem der des di- dia dib did die dii dim dir dis dma dmb dmd dme dmi dmm dmr dms dra drb drd dre dri drm drr drs dsa dsb dsd dse dsi dsm dsr dss eaa eab ead eae eai eam ear eas eba ebb ebd ebe ebi ebm ebr ebs ed- eda edb edd ede edi edm edr eds eea eeb eed eee eem eer ees eia eib eid eie eii eim eir eis em- ema emb emd eme emi emm emr ems era erb erd ere eri erm err ers es- esa esb esd ese esi esm esr ess i-d ia- iaa iab iad iae iai iam iar ias iba ibb ibd ibe ibi ibm ibr ibs ida idb idd ide idi idm idr ids ie- iea ied iee iei iem ier ies iia iib iid iie iii iim iir iis im- ima imb imd ime imi imm ims ir- ira irb ird ire iri irm irr irs is- isa isb isd ise isi ism isr iss m-r maa mab mad mae mai mam mar mas mba mbb mbd mbe mbi mbm mbr mbs mda mdb mdd mde mdi mdm mdr mds mea meb med mee mei mem mer mes mi- mia mib mid mie mii mim mir mis mma mmb mmd mme mmi mmm mmr mms mra mrb mrd mre mri mrm mrr mrs msa msb msd mse msi msm msr mss ra- raa rab rad rae rai ram rar ras rba rbb rbd rbe rbi rbm rbr rbs rda rdb rdd rde rdi rdm rdr rds re- rea reb red ree rei rem rer res ria rib rid rie rii rim rir ris rma rmb rmd rme rmi rmm rmr rms rra rrb rrd rri rrm rrr rrs rsa rsb rsd rse rsi rsm rsr rss saa sab sad sae sai sam sar sas sba sbb sbd sbe sbi sbm sbr sbs sda sdb sdd sde sdi sdm sdr sds se- sea seb sed see sei sem ser ses sia sib sid sie sii sim sir sis sma smb smd sme smi smm smr sms sr- sra srb srd sre sri srm srr srs ss- ssa ssb ssd sse ssi ssm ssr sss