-er -ey bbb bbd bbe bbi bbo bbr bbs bby bdb bdd bde bdi bdo bdr bds bdy be- beb bed bee bei beo ber bes bey bi- bib bid bie bii bio bir bis biy bob bod boe boi boo bor bos boy brb brd bre bri bro brr brs bry bsb bsd bse bsi bso bsr bss bsy by- byd bye byi byo byr bys dbb dbd dbe dbi dbo dbr dbs dby ddb ddd dde ddi ddo ddr dds ddy de- deb ded dee dei deo der des dey di- dib did die dii dio dir dis diy dob dod doe doi doo dor dos doy drb drd dre dri dro drr drs dry dsb dsd dse dsi dso dsr dss dsy dy- dyb dyd dye dyo dyr dys dyy ebb ebd ebe ebi ebo ebr ebs eby ed- edb edd ede edi edo edr eds edy eeb eed eee eeo eer ees eey eib eid eie eii eio eir eis eo- eob eod eoe eoi eoo eor eos erb erd ere eri ero err ers ery es- esb esd ese esi eso esr ess esy eyd eye eyo eyr eys i-d ibb ibd ibe ibi ibo ibr ibs iby idb idd ide idi ido idr ids idy ie- ied iee iei ier ies iey iib iid iie iii iio iir iis io- iob iod ioe ioi ioo ior ios ir- irb ird ire iri iro irr irs iry is- isb isd ise isi iso isr iss isy iye iyo iyr iys iyy o-i ob- obb obd obe obi obo obr obs oby odb odd ode odi odo odr ods oeb oed oee oei oeo oer oes oey oib oid oie oii oio oir ois oo- oob ood ooi ooo oor oos or- orb ord ore ori oro orr ors ory os- osb osd ose osi oso osr oss oyd oye oyi oyo oys rbb rbd rbe rbi rbo rbr rbs rdb rdd rde rdi rdo rdr rds rdy re- reb red ree rei reo rer res rey rib rid rie rii rio rir ris riy rob rod roe roi roo ror ros roy rrb rrd rri rrr rrs rsb rsd rse rsi rso rsr rss ry- ryd rye ryo ryr rys ryy sbb sbd sbe sbi sbo sbr sbs sby sdb sdd sde sdi sdo sdr sds sdy se- seb sed see sei seo ser ses sey sib sid sie sii sio sir sis sob sod soe soi soo sor sos soy sr- srb srd sre sri sro srr srs sry ss- ssb ssd sse ssi sso ssr sss sy- syb syd sye syi syr sys ybe ybi ybr ybs yby yde ydo yds ydy yeb yed yee yei yeo yer yes yey yid yie yii yio yir yis yob yod yoe yoi yoo yor yos yoy yre yro yrs ysb yse ysi yso ysr yss ysy yyb yye yys yyy