bbb bbe bbi bbk bbm bbx be- beb bee bei bek bem bex bi- bib bie bii bik bim bix bkb bke bkk bkm bkx bmb bme bmi bmk bmm bmx bxb bxi bxm bxx ebb ebe ebi ebk ebm ebx eeb eee eek eem eex eib eie eii eik eim eix ekb eke eki em- emb eme emi emk emm emx ex- exe exi exx ibb ibe ibi ibk ibm ibx ie- iee iei iek iem iex iib iie iii iim iix ikb ike iki ikk ikx im- imb ime imi imm imx ixe ixi kbb kbe kbi kbk kbm kbx ke- keb kee kei kek kem kex kib kie kii kik kim kix kkb kke kki kkk kkm kmb kme kmi kmk kmm kxm mbb mbe mbi mbk mbm mbx meb mee mei mek mem mex mi- mib mie mii mik mim mix mkb mke mkk mkm mkx mmb mme mmi mmk mmm mmx mxi xbe xbx xee xem xex xie xii xix xkb xke xmi xmk xmm xmx xxi xxx