bbb bbe bbi bbm bbt be- beb bee bei bem bet bez bi- bib bie bii bim bit biz bmb bme bmi bmm bmt bmz btb bte bti btm btt btz bze bzz 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 etz eze ezz ibb ibe ibi ibm ibt ibz ie- iee iei iem iet iib iie iii iim iit im- imb ime imi imm imt imz itb ite iti itm itt itz ize izi izm izz mbb mbe mbi mbm mbt meb mee mei mem met mez mi- mib mie mii mim mit miz mmb mme mmi mmm mmt mmz mtb mte mti mtm mtt mzb mzi mzm mzt tbb tbe tbi tbm tbt tbz te- teb tee tei tem tet tez tib tie tii tim tit tiz tmb tme tmi tmm tmt tmz ttb tte tti ttm ttt tze zbb zbm zbt zeb zee zem zet zez zib zie zim zit ziz zmb zmm zmt zte ztm zzt zzz