bbb bbd bbe bbi bbm bbs bdb bdd bde bdi bdm bds be- beb bed bee bei bem bes bi- bib bid bie bii bim bis bmb bmd bme bmi bmm bms bsb bsd bse bsi bsm bss dbb dbd dbe dbi dbm dbs ddb ddd dde ddi ddm dds de- deb ded dee dei dem des di- dib did die dii dim dis dmb dmd dme dmi dmm dms dsb dsd dse dsi dsm dss ebb ebd ebe ebi ebm ebs ed- edb edd ede edi edm eds eeb eed eee eem ees eib eid eie eii eim eis em- emb emd eme emi emm ems es- esb esd ese esi esm ess i-d ibb ibd ibe ibi ibm ibs idb idd ide idi idm ids ie- ied iee iei iem ies iib iid iie iii iim iis im- imb imd ime imi imm ims is- isb isd ise isi ism iss mbb mbd mbe mbi mbm mbs mdb mdd mde mdi mdm mds meb med mee mei mem mes mi- mib mid mie mii mim mis mmb mmd mme mmi mmm mms msb msd mse msi msm mss sbb sbd sbe sbi sbm sbs sdb sdd sde sdi sdm sds se- seb sed see sei sem ses sib sid sie sii sim sis smb smd sme smi smm sms ss- ssb ssd sse ssi ssm sss