-ey bbb bbd bbe bbo bbs bby bdb bdd bde bdo bds bdy be- beb bed bee beo bes bey bob bod boe boo bos boy bsb bsd bse bso bss bsy by- byd bye byo bys dbb dbd dbe dbo dbs dby ddb ddd dde ddo dds ddy de- deb ded dee deo des dey dob dod doe doo dos doy dsb dsd dse dso dss dsy dy- dyb dyd dye dyo dys dyy ebb ebd ebe ebo ebs eby ed- edb edd ede edo eds edy eeb eed eee eeo ees eey eo- eob eod eoe eoo eos es- esb esd ese eso ess esy eyd eye eyo eys ob- obb obd obe obo obs oby odb odd ode odo ods oeb oed oee oeo oes oey oo- oob ood ooo oos os- osb osd ose oso oss oyd oye oyo oys sbb sbd sbe sbo sbs sby sdb sdd sde sdo sds sdy se- seb sed see seo ses sey sob sod soe soo sos soy ss- ssb ssd sse sso sss sy- syb syd sye sys ybe ybs yby yde ydo yds ydy yeb yed yee yeo yes yey yob yod yoe yoo yos yoy ysb yse yso yss ysy yyb yye yys yyy