bbb bbe bbi bbk bbm bbs be- beb bee bei bek bem bes bi- bib bie bii bik bim bis bkb bke bkk bkm bks bmb bme bmi bmk bmm bms bsb bse bsi bsk bsm bss ebb ebe ebi ebk ebm ebs eeb eee eek eem ees eib eie eii eik eim eis ekb eke eki eks em- emb eme emi emk emm ems es- esb ese esi esk esm ess ibb ibe ibi ibk ibm ibs ie- iee iei iek iem ies iib iie iii iim iis ikb ike iki ikk iks im- imb ime imi imm ims is- isb ise isi isk ism iss kbb kbe kbi kbk kbm kbs ke- keb kee kei kek kem kes kib kie kii kik kim kis kkb kke kki kkk kkm kks kmb kme kmi kmk kmm kms ksb kse ksi ksk ksm kss mbb mbe mbi mbk mbm mbs meb mee mei mek mem mes mi- mib mie mii mik mim mis mkb mke mkk mkm mks mmb mme mmi mmk mmm mms msb mse msi msk msm mss sbb sbe sbi sbk sbm sbs se- seb see sei sek sem ses sib sie sii sik sim sis sk- skb ske ski skk skm sks smb sme smi smk smm sms ss- ssb sse ssi ssk ssm sss