-er -ey bbb bbe bbm bbo bbr bbs bby be- beb bee bem beo ber bes bey bmb bme bmm bmo bmr bms bob boe bom boo bor bos boy brb bre brm bro brr brs bry bsb bse bsm bso bsr bss bsy by- bye bym byo byr bys ebb ebe ebm ebo ebr ebs eby eeb eee eem eeo eer ees eey em- emb eme emm emo emr ems eo- eob eoe eom eoo eor eos erb ere erm ero err ers ery es- esb ese esm eso esr ess esy eye eym eyo eyr eys m-o m-r mbb mbe mbm mbo mbr mbs meb mee mem meo mer mes mey mmb mme mmm mmo mmr mms mob moe mom moo mor mos moy mrb mre mrm mro mrr mrs mry msb mse msm mso msr mss msy my- myb mye mym myo myr mys ob- obb obe obm obo obr obs oby oeb oee oem oeo oer oes oey om- omb ome omm omo omr oms omy oo- oob oom ooo oor oos or- orb ore orm oro orr ors ory os- osb ose osm oso osr oss oye oyo oys rbb rbe rbm rbo rbr rbs re- reb ree rem reo rer res rey rmb rme rmm rmo rmr rms rob roe rom roo ror ros roy rrb rrm rrr rrs rsb rse rsm rso rsr rss ry- rye rym ryo ryr rys ryy sbb sbe sbm sbo sbr sbs sby se- seb see sem seo ser ses sey smb sme smm smo smr sms smy sob soe som soo sor sos soy sr- srb sre srm sro srr srs sry ss- ssb sse ssm sso ssr sss sy- syb sye sym syr sys ybe ybm ybr ybs yby yeb yee yem yeo yer yes yey yme ymm ymo yms yob yoe yom yoo yor yos yoy yre yro yrs ysb yse ysm yso ysr yss ysy yyb yye yys yyy