-er -ey ddd dde ddi ddk ddo ddr dds ddx ddy de- ded dee dei dek deo der des dex dey di- did die dii dik dio dir dis dix diy dke dki dkk dko dkr dks dkx dod doe doi dok doo dor dos dox doy drd dre dri drk dro drr drs drx dry dsd dse dsi dsk dso dsr dss dsx dsy dxd dxi dxo dxr dxs dxx dy- dyd dye dyk dyo dyr dys dyy ed- edd ede edi edk edo edr eds edx edy eed eee eek eeo eer ees eex eey eid eie eii eik eio eir eis eix ekd eke eki eko ekr eks eky eo- eod eoe eoi eok eoo eor eos erd ere eri erk ero err ers ery es- esd ese esi esk eso esr ess esx esy ex- exd exe exi exo exr exs exx exy eyd eye eyo eyr eys i-d idd ide idi idk ido idr ids idx idy ie- ied iee iei iek ier ies iex iey iid iie iii iio iir iis iix ike iki ikk iko ikr iks ikx io- iod ioe ioi ioo ior ios ir- ird ire iri irk iro irr irs irx iry is- isd ise isi isk iso isr iss isy ixe ixi ixy iye iyo iyr iys iyy kde kdk kdo kdr kds kdx kdy ke- ked kee kei kek keo ker kes kex key kid kie kii kik kio kir kis kix kke kki kkk kkr kks kky kod koe koi kok koo kor kos koy krd kri krk kro krr krs kry ksd kse ksi ksk kso ksr kss kxo kxy kyd kye kyo kyr kys kyx o-i odd ode odi odo odr ods oed oee oei oeo oer oes oex oey oid oie oii oik oio oir ois okd oke oki okk oko okr oks oo- ood ooi ook ooo oor oos oox or- ord ore ori ork oro orr ors orx ory os- osd ose osi osk oso osr oss osx ox- oxi oxo oxx oxy oyd oye oyi oyo oys rdd rde rdi rdo rdr rds rdx rdy re- red ree rei rek reo rer res rex rey rid rie rii rik rio rir ris rix riy rke rkk rko rks rky rod roe roi rok roo ror ros rox roy rrd rri rrk rrr rrs rsd rse rsi rsk rso rsr rss rsx rxr rxs ry- ryd rye ryk ryo ryr rys ryy sdd sde sdi sdk sdo sdr sds sdy se- sed see sei sek seo ser ses sex sey sid sie sii sik sio sir sis six sk- skd ske ski skk sko skr sks skx sky sod soe soi sok soo sor sos sox soy sr- srd sre sri srk sro srr srs srx sry ss- ssd sse ssi ssk sso ssr sss ssx sxi sxs sy- syd sye syi syk syr sys syx xde xdi xdk xdr xds xed xee xer xes xex xie xii xio xis xix xke xks xod xoi xok xoo xor xos xox xrd xrx xry xsi xss xxi xxo xxx xxy xyr xyy yde ydo yds ydy yed yee yei yek yeo yer yes yex yey yid yie yii yio yir yis yki ykk yod yoe yoi yok yoo yor yos yox yoy yre yro yrs yse ysi ysk yso ysr yss ysy yxe yxy yye yys yyy