a-a a-b a-i aaa aab aad aae aai aam aas ab- aba abb abd abe abi abm abs ad- ada adb add ade adi adm ads aea aeb aed aee aei aem aes ai- aia aib aid aie aii aim ais ama amb amd ame ami amm ams as- asa asb asd ase asi asm ass baa bab bad bae bai bam bas bba bbb bbd bbe bbi bbm bbs bda bdb bdd bde bdi bdm bds be- bea beb bed bee bei bem bes bi- bia bib bid bie bii bim bis bma bmb bmd bme bmi bmm bms bsa bsb bsd bse bsi bsm bss daa dab dad dae dai dam das dba dbb dbd dbe dbi dbm dbs dda ddb ddd dde ddi ddm dds de- dea deb ded dee dei dem des di- dia dib did die dii dim dis dma dmb dmd dme dmi dmm dms dsa dsb dsd dse dsi dsm dss eaa eab ead eae eai eam eas eba ebb ebd ebe ebi ebm ebs ed- eda edb edd ede edi edm eds eea eeb eed eee eem ees eia eib eid eie eii eim eis em- ema emb emd eme emi emm ems es- esa esb esd ese esi esm ess i-d ia- iaa iab iad iae iai iam ias iba ibb ibd ibe ibi ibm ibs ida idb idd ide idi idm ids ie- iea ied iee iei iem ies iia iib iid iie iii iim iis im- ima imb imd ime imi imm ims is- isa isb isd ise isi ism iss maa mab mad mae mai mam mas mba mbb mbd mbe mbi mbm mbs mda mdb mdd mde mdi mdm mds mea meb med mee mei mem mes mi- mia mib mid mie mii mim mis mma mmb mmd mme mmi mmm mms msa msb msd mse msi msm mss saa sab sad sae sai sam sas sba sbb sbd sbe sbi sbm sbs sda sdb sdd sde sdi sdm sds se- sea seb sed see sei sem ses sia sib sid sie sii sim sis sma smb smd sme smi smm sms ss- ssa ssb ssd sse ssi ssm sss