-er ddd dde ddf ddi ddl ddr dds ddt de- ded dee def dei del der des det dfd dfe dff dfi dfl dfr dfs dft di- did die dif dii dil dir dis dit dl- dld dle dlf dli dll dlr dls dlt drd dre dri drl drr drs drt dsd dse dsf dsi dsl dsr dss dst dtd dte dtf dti dtl dtr dts dtt ed- edd ede edf edi edl edr eds edt eed eee eef eel eer ees eet ef- efd efe eff efi efl efr efs eft eid eie eif eii eil eir eis eit eld ele elf eli ell elr els elt erd ere erf eri erl err ers ert es- esd ese esf esi esl esr ess est etd ete etf eti etl etr ets ett fdd fde fdf fdi fdl fdr fds fdt fed fee fef fei fel fer fes fet ffd ffe fff ffi ffl ffr ffs fft fid fie fif fii fil fir fis fit fld fle flf fli fll flr fls flt frd fre frf fri frl frr frs frt fsd fse fsf fsi fsl fsr fss fst ftd fte ftf fti ftl ftr fts ftt i-d i-f idd ide idf idi idl idr ids idt ie- ied iee ief iei iel ier ies iet ifd ife iff ifi ifl ifr ifs ift iid iie iif iii iil iir iis iit il- ild ile ilf ili ill ilr ils ilt ir- ird ire irf iri irl irr irs irt is- isd ise isf isi isl isr iss ist itd ite itf iti itl its itt ldd lde ldf ldi ldl ldr lds ldt led lee lef lei lel ler les let lfd lfe lff lfi lfl lfr lfs lft lid lie lif lii lil lir lis lit lld lle llf lli lll llr lls llt lrd lrf lri lrr lrs lrt lsd lse lsf lsi lsl lsr lss lst ltd lte ltf lti ltl ltr lts ltt rdd rde rdf rdi rdl rdr rds rdt re- red ree ref rei rel rer res ret rfd rfe rff rfi rfl rfr rfs rft rid rie rif rii ril rir ris rit rld rle rlf rli rll rlr rls rlt rrd rrf rri rrl rrr rrs rrt rsd rse rsf rsi rsl rsr rss rst rtd rte rtf rti rtl rtr rts rtt sdd sde sdf sdi sdl sdr sds sdt se- sed see sef sei sel ser ses set sfd sfe sff sfi sfl sfr sfs sft sid sie sif sii sil sir sis sit sld sle slf sli sll slr sls slt sr- srd sre srf sri srl srr srs srt ss- ssd sse ssf ssi ssl ssr sss sst std ste stf sti stl str sts stt tdd tde tdf tdi tdl tdr tds tdt te- ted tee tef tei tel ter tes tet tfd tfe tff tfi tfl tfr tfs tft tid tie tif tii til tir tis tit tld tle tlf tli tll tlr tls tlt trd tre trf tri trl trr trs trt tsd tse tsf tsi tsl tsr tss tst ttd tte ttf tti ttl ttr tts ttt