-er ddd dde ddi ddo ddr dds ddx ddz de- ded dee dei deo der des dev dex dez di- did die dii dio dir dis div dix diz dod doe doi doo dor dos dov dox doz drd dre dri dro drr drs drv drx drz dsd dse dsi dso dsr dss dsv dsx dsz dvd dve dvi dvr dvs dvx dxd dxi dxo dxr dxs dxx dzd dze dzi dzo dzr dzs ed- edd ede edi edo edr eds edx eed eee eeo eer ees eev eex eid eie eii eio eir eis eiv eix eo- eod eoe eoi eoo eor eos erd ere eri ero err ers erv erz es- esd ese esi eso esr ess esv esx evd eve evi evo evr evs evv ex- exd exe exi exo exr exs exx eze ezo ezr ezs ezz i-d i-v idd ide idi ido idr ids idv idx ie- ied iee iei ier ies iev iex iid iie iii iio iir iis iix io- iod ioe ioi ioo ior ios iov ir- ird ire iri iro irr irs irv irx is- isd ise isi iso isr iss isv ivd ive ivi ivo ivr ivs ivv ivx ixe ixi ize izi izo izz o-i odd ode odi odo odr ods odv oed oee oei oeo oer oes oex oid oie oii oio oir ois oiv oiz oo- ood ooi ooo oor oos oov oox or- ord ore ori oro orr ors orv orx orz os- osd ose osi oso osr oss osv osx ov- ovd ove ovi ovo ovs ovv ox- oxi oxo oxx oze ozo ozs ozz rdd rde rdi rdo rdr rds rdv rdx re- red ree rei reo rer res rev rex rez rid rie rii rio rir ris riv rix riz rod roe roi roo ror ros rov rox roz rrd rri rrr rrs rsd rse rsi rso rsr rss rsv rsx rvd rve rvi rvo rvr rvs rvv rxr rxs rze rzo sdd sde sdi sdo sdr sds sdv sdz se- sed see sei seo ser ses sev sex sez sid sie sii sio sir sis siv six sod soe soi soo sor sos sov sox soz sr- srd sre sri sro srr srs srv srx ss- ssd sse ssi sso ssr sss ssv ssx ssz svd sve svi svo svr svs svv svx svz sxi sxs szd sze szi szr v-e vdd vde vdi vdo vdr vds vdv vdx ved vee vei veo ver ves vex vez vi- vid vie vii vio vir vis viv vix viz vod voe voi voo vor vos vov vox voz vrd vre vri vrr vrs vsd vse vsi vso vsr vss vsv vvi vvo vvr vvs vvv vvz vxd vxr vxs vxv xde xdi xdr xds xdv xed xee xer xes xev xex xie xii xio xis xiv xix xod xoi xoo xor xos xov xox xrd xrx xsi xss xvi xxi xxo xxv xxx zds zdv zed zee zeo zer zes zev zez zid zie zio zir zis ziv zix ziz zo- zod zoe zoi zoo zor zos zox zro zrs zse zsi zsz zvi zxx zzr zzs zzx zzz