-er ddd dde ddf ddi ddl ddp ddr dds de- ded dee def dei del dep der des dfd dfe dff dfi dfl dfp dfr dfs di- did die dif dii dil dip dir dis dl- dld dle dlf dli dll dlp dlr dls dpd dpe dpf dpi dpl dpp dpr dps drd dre dri drl drp drr drs dsd dse dsf dsi dsl dsp dsr dss ed- edd ede edf edi edl edp edr eds eed eee eef eel eep eer ees ef- efd efe eff efi efl efp efr efs eid eie eif eii eil eip eir eis eld ele elf eli ell elp elr els ep- epd epe epf epi epl epp epr eps erd ere erf eri erl erp err ers es- esd ese esf esi esl esp esr ess fdd fde fdf fdi fdl fdp fdr fds fed fee fef fei fel fep fer fes ffd ffe fff ffi ffl ffp ffr ffs fid fie fif fii fil fip fir fis fld fle flf fli fll flp flr fls fpd fpe fpi fpl fpp fpr fps frd fre frf fri frl frp frr frs fsd fse fsf fsi fsl fsp fsr fss i-d i-f idd ide idf idi idl idp idr ids ie- ied iee ief iei iel iep ier ies ifd ife iff ifi ifl ifp ifr ifs iid iie iif iii iil iip iir iis il- ild ile ilf ili ill ilp ilr ils ipd ipe ipf ipi ipl ipp ipr ips ir- ird ire irf iri irl irp irr irs is- isd ise isf isi isl isp isr iss l-p ldd lde ldf ldi ldl ldp ldr lds led lee lef lei lel lep ler les lfd lfe lff lfi lfl lfp lfr lfs lid lie lif lii lil lip lir lis lld lle llf lli lll llp llr lls lpd lpe lpf lpi lpl lpp lpr lps lrd lrf lri lrp lrr lrs lsd lse lsf lsi lsl lsp lsr lss p-p pdd pde pdf pdi pdl pdp pdr pds ped pee pef pei pel pep per pes pfd pfe pff pfi pfl pfp pfr pfs pid pie pif pii pil pip pir pis pld ple plf pli pll plp plr pls ppd ppe ppf ppi ppl ppp ppr pps prd pre prf pri prl prp prr prs ps- psd pse psf psi psl psp psr pss rdd rde rdf rdi rdl rdp rdr rds re- red ree ref rei rel rep rer res rfd rfe rff rfi rfl rfp rfr rfs rid rie rif rii ril rip rir ris rld rle rlf rli rll rlp rlr rls rpd rpe rpf rpi rpl rpp rpr rps rrd rrf rri rrl rrp rrr rrs rsd rse rsf rsi rsl rsp rsr rss sdd sde sdf sdi sdl sdp sdr sds se- sed see sef sei sel sep ser ses sfd sfe sff sfi sfl sfp sfr sfs sid sie sif sii sil sip sir sis sld sle slf sli sll slp slr sls spd spe spf spi spl spp spr sps sr- srd sre srf sri srl srp srr srs ss- ssd sse ssf ssi ssl ssp ssr sss