-ey bbb bbe bbm bbo bbs bby be- beb bee bem beo bes bey bmb bme bmm bmo bms bob boe bom boo bos boy bsb bse bsm bso bss bsy by- bye bym byo bys ebb ebe ebm ebo ebs eby eeb eee eem eeo ees eey em- emb eme emm emo ems eo- eob eoe eom eoo eos es- esb ese esm eso ess esy eye eym eyo eys m-o mbb mbe mbm mbo mbs meb mee mem meo mes mey mmb mme mmm mmo mms mob moe mom moo mos moy msb mse msm mso mss msy my- myb mye mym myo mys ob- obb obe obm obo obs oby oeb oee oem oeo oes oey om- omb ome omm omo oms omy oo- oob oom ooo oos os- osb ose osm oso oss oye oyo oys sbb sbe sbm sbo sbs sby se- seb see sem seo ses sey smb sme smm smo sms smy sob soe som soo sos soy ss- ssb sse ssm sso sss sy- syb sye sym sys ybe ybm ybs yby yeb yee yem yeo yes yey yme ymm ymo yms yob yoe yom yoo yos yoy ysb yse ysm yso yss ysy yyb yye yys yyy