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