-er ddd dde ddf ddi ddo ddr dds ddz de- ded dee def dei deo der des dez dfd dfe dff dfi dfo dfr dfs dfz di- did die dif dii dio dir dis diz dod doe dof doi doo dor dos doz drd dre dri dro drr drs drz dsd dse dsf dsi dso dsr dss dsz dzd dze dzi dzo dzr dzs ed- edd ede edf edi edo edr eds eed eee eef eeo eer ees ef- efd efe eff efi efo efr efs eid eie eif eii eio eir eis eo- eod eoe eof eoi eoo eor eos erd ere erf eri ero err ers erz es- esd ese esf esi eso esr ess eze ezf ezo ezr ezs ezz fdd fde fdf fdi fdo fdr fds fed fee fef fei feo fer fes fez ffd ffe fff ffi ffo ffr ffs ffz fid fie fif fii fir fis fiz foe fof foi foo for fos foz frd fre frf fri fro frr frs fsd fse fsf fsi fso fsr fss fzd i-d i-f idd ide idf idi ido idr ids ie- ied iee ief iei ier ies ifd ife iff ifi ifo ifr ifs ifz iid iie iif iii iio iir iis io- iod ioe iof ioi ioo ior ios ir- ird ire irf iri iro irr irs is- isd ise isf isi iso isr iss ize izi izo izz o-i odd ode odf odi odo odr ods oed oee oef oei oeo oer oes of- ofd ofe off ofi ofo ofr ofs ofz oid oie oif oii oio oir ois oiz oo- ood oof ooi ooo oor oos or- ord ore orf ori oro orr ors orz os- osd ose osf osi oso osr oss oze ozo ozs ozz rdd rde rdf rdi rdo rdr rds re- red ree ref rei reo rer res rez rfd rfe rff rfi rfo rfr rfs rfz rid rie rif rii rio rir ris riz rod roe rof roi roo ror ros roz rrd rrf rri rrr rrs rsd rse rsf rsi rso rsr rss rze rzo sdd sde sdf sdi sdo sdr sds sdz se- sed see sef sei seo ser ses sez sfd sfe sff sfi sfo sfr sfs sfz sid sie sif sii sio sir sis sod soe sof soi soo sor sos soz sr- srd sre srf sri sro srr srs ss- ssd sse ssf ssi sso ssr sss ssz szd sze szi szr zdf zds zed zee zef zeo zer zes zez zfd zfr zfs zid zie zif zio zir zis ziz zo- zod zoe zof zoi zoo zor zos zro zrs zse zsi zsz zzr zzs zzz