bbb bbe bbi bbm bbt be- beb bee bei bem bet bi- bib bie bii bim bit bmb bme bmi bmm bmt btb bte bti btm btt ebb ebe ebi ebm ebt eeb eee eem eet eib eie eii eim eit em- emb eme emi emm emt etb ete eti etm ett ibb ibe ibi ibm ibt ie- iee iei iem iet iib iie iii iim iit im- imb ime imi imm imt itb ite iti itm itt mbb mbe mbi mbm mbt meb mee mei mem met mi- mib mie mii mim mit mmb mme mmi mmm mmt mtb mte mti mtm mtt tbb tbe tbi tbm tbt te- teb tee tei tem tet tib tie tii tim tit tmb tme tmi tmm tmt ttb tte tti ttm ttt