-er ddd dde ddf ddi ddo ddr dds ddt ddz de- ded dee def dei deo der des det dez dfd dfe dff dfi dfo dfr dfs dft dfz di- did die dif dii dio dir dis dit diz dod doe dof doi doo dor dos dot doz drd dre dri dro drr drs drt drz dsd dse dsf dsi dso dsr dss dst dsz dtd dte dtf dti dto dtr dts dtt dtz dzd dze dzi dzo dzr dzs ed- edd ede edf edi edo edr eds edt eed eee eef eeo eer ees eet ef- efd efe eff efi efo efr efs eft eid eie eif eii eio eir eis eit eo- eod eoe eof eoi eoo eor eos eot erd ere erf eri ero err ers ert erz es- esd ese esf esi eso esr ess est etd ete etf eti eto etr ets ett etz eze ezf ezo ezr ezs ezz fdd fde fdf fdi fdo fdr fds fdt fed fee fef fei feo fer fes fet fez ffd ffe fff ffi ffo ffr ffs fft ffz fid fie fif fii fir fis fit fiz foe fof foi foo for fos fot foz frd fre frf fri fro frr frs frt fsd fse fsf fsi fso fsr fss fst ftd fte ftf fti fto ftr fts ftt ftz fzd i-d i-f idd ide idf idi ido idr ids idt ie- ied iee ief iei ier ies iet ifd ife iff ifi ifo ifr ifs ift ifz iid iie iif iii iio iir iis iit io- iod ioe iof ioi ioo ior ios iot ir- ird ire irf iri iro irr irs irt is- isd ise isf isi iso isr iss ist itd ite itf iti ito its itt itz ize izi izo izz o-i odd ode odf odi odo odr ods odt oed oee oef oei oeo oer oes oet of- ofd ofe off ofi ofo ofr ofs oft ofz oid oie oif oii oio oir ois oit oiz oo- ood oof ooi ooo oor oos oot or- ord ore orf ori oro orr ors ort orz os- osd ose osf osi oso osr oss ost ot- otd ote otf oti oto otr ots ott otz oze ozo ozs ozt ozz rdd rde rdf rdi rdo rdr rds rdt re- red ree ref rei reo rer res ret rez rfd rfe rff rfi rfo rfr rfs rft rfz rid rie rif rii rio rir ris rit riz rod roe rof roi roo ror ros rot roz rrd rrf rri rrr rrs rrt rsd rse rsf rsi rso rsr rss rst rtd rte rtf rti rto rtr rts rtt rtz rze rzo sdd sde sdf sdi sdo sdr sds sdt sdz se- sed see sef sei seo ser ses set sez sfd sfe sff sfi sfo sfr sfs sft sfz sid sie sif sii sio sir sis sit sod soe sof soi soo sor sos sot soz sr- srd sre srf sri sro srr srs srt ss- ssd sse ssf ssi sso ssr sss sst ssz std ste stf sti sto str sts stt stz szd sze szi szr tdd tde tdf tdi tdo tdr tds tdt te- ted tee tef tei teo ter tes tet tez tfd tfe tff tfi tfo tfr tfs tft tid tie tif tii tio tir tis tit tiz to- tod toe tof toi too tor tos tot toz trd tre trf tri tro trr trs trt trz tsd tse tsf tsi tso tsr tss tst ttd tte ttf tti tto ttr tts ttt tzd tze tzf tzs zdf zds zdt zed zee zef zeo zer zes zet zez zfd zfr zfs zid zie zif zio zir zis zit ziz zo- zod zoe zof zoi zoo zor zos zot zro zrs zse zsi zst zsz zte ztr zzr zzs zzt zzz