bbb bbi bbm bbo bbs bby bi- bib bii bim bio bis biy biz bmb bmi bmm bmo bms bmz bob boi bom boo bos boy boz bsb bsi bsm bso bss bsy by- byi bym byo bys byz bzo bzs bzz ibb ibi ibm ibo ibs iby ibz iib iii iim iio iis im- imb imi imm imo ims imy imz io- iob ioi iom ioo ios is- isb isi ism iso iss isy iym iyo iys iyy izi izm izo izy izz m-o mbb mbi mbm mbo mbs mi- mib mii mim mio mis miy miz mmb mmi mmm mmo mms mmz mob moi mom moo mos moy moz msb msi msm mso mss msy my- myb mym myo mys mzb mzi mzm o-i ob- obb obi obm obo obs oby oib oii oim oio ois oiz om- omb omi omm omo oms omy omz oo- oob ooi oom ooo oos os- osb osi osm oso oss oyi oyo oys ozm ozo ozs ozz sbb sbi sbm sbo sbs sby sib sii sim sio sis smb smi smm smo sms smy smz sob soi som soo sos soy soz ss- ssb ssi ssm sso sss ssz sy- syb syi sym sys szi ybi ybm ybs yby ybz yii yim yio yis yiz ymi ymm ymo yms yob yoi yom yoo yos yoy ysb ysi ysm yso yss ysy ysz yyb yys yyy yyz yzb yzy zbb zbm zbs zby zib zim zio zis ziz zmb zmm zms zo- zob zoi zom zoo zos zsi zsm zsz zym zzs zzy zzz