bbb bbe bbi bbm bbo be- beb bee bei bem beo bez bi- bib bie bii bim bio biz bmb bme bmi bmm bmo bmz bob boe boi bom boo boz bze bzo bzz ebb ebe ebi ebm ebo eeb eee eem eeo eib eie eii eim eio em- emb eme emi emm emo eo- eob eoe eoi eom eoo eze ezo ezz ibb ibe ibi ibm ibo ibz ie- iee iei iem iib iie iii iim iio im- imb ime imi imm imo imz io- iob ioe ioi iom ioo ize izi izm izo izz m-o mbb mbe mbi mbm mbo meb mee mei mem meo mez mi- mib mie mii mim mio miz mmb mme mmi mmm mmo mmz mob moe moi mom moo moz mzb mzi mzm o-i ob- obb obe obi obm obo oeb oee oei oem oeo oib oie oii oim oio oiz om- omb ome omi omm omo omz oo- oob ooi oom ooo oze ozm ozo ozz zbb zbm zeb zee zem zeo zez zib zie zim zio ziz zmb zmm zo- zob zoe zoi zom zoo zzz