bbb bbe bbi bbk bbm be- beb bee bei bek bem bi- bib bie bii bik bim bkb bke bkk bkm bmb bme bmi bmk bmm ebb ebe ebi ebk ebm eeb eee eek eem eib eie eii eik eim ekb eke eki em- emb eme emi emk emm ibb ibe ibi ibk ibm ie- iee iei iek iem iib iie iii iim ikb ike iki ikk im- imb ime imi imm kbb kbe kbi kbk kbm ke- keb kee kei kek kem kib kie kii kik kim kkb kke kki kkk kkm kmb kme kmi kmk kmm mbb mbe mbi mbk mbm meb mee mei mek mem mi- mib mie mii mik mim mkb mke mkk mkm mmb mme mmi mmk mmm