bbb bbd bbe bbi bbm bbx bdb bdd bde bdi bdm bdx be- beb bed bee bei bem bex bi- bib bid bie bii bim bix bmb bmd bme bmi bmm bmx bxb bxd bxi bxm bxx dbb dbd dbe dbi dbm dbx ddb ddd dde ddi ddm ddx de- deb ded dee dei dem dex di- dib did die dii dim dix dmb dmd dme dmi dmm dmx dxd dxi dxx ebb ebd ebe ebi ebm ebx ed- edb edd ede edi edm edx eeb eed eee eem eex eib eid eie eii eim eix em- emb emd eme emi emm emx ex- exd exe exi exx i-d ibb ibd ibe ibi ibm ibx idb idd ide idi idm idx ie- ied iee iei iem iex iib iid iie iii iim iix im- imb imd ime imi imm imx ixe ixi mbb mbd mbe mbi mbm mbx mdb mdd mde mdi mdm mdx meb med mee mei mem mex mi- mib mid mie mii mim mix mmb mmd mme mmi mmm mmx mxd mxi xbe xbx xdb xde xdi xdm xed xee xem xex xie xii xix xmd xmi xmm xmx xxi xxx