-er ddd dde ddi ddl ddn ddp ddr dds de- ded dee dei del den dep der des di- did die dii dil din dip dir dis dl- dld dle dli dll dlp dlr dls dnd dne dni dnl dnn dnp dnr dns dpd dpe dpi dpl dpn dpp dpr dps drd dre dri drl drn drp drr drs dsd dse dsi dsl dsn dsp dsr dss ed- edd ede edi edl edn edp edr eds eed eee eel een eep eer ees eid eie eii eil ein eip eir eis eld ele eli ell eln elp elr els en- end ene eni enl enn enp enr ens ep- epd epe epi epl epn epp epr eps erd ere eri erl ern erp err ers es- esd ese esi esl esn esp esr ess i-d idd ide idi idl idn idp idr ids ie- ied iee iei iel ien iep ier ies iid iie iii iil iin iip iir iis il- ild ile ili ill iln ilp ilr ils in- ind ine ini inl inn inp inr ins ipd ipe ipi ipl ipn ipp ipr ips ir- ird ire iri irl irn irp irr irs is- isd ise isi isl isn isp isr iss l-p ldd lde ldi ldl ldn ldp ldr lds led lee lei lel len lep ler les lid lie lii lil lin lip lir lis lld lle lli lll lln llp llr lls lnd lne lni lnl lnn lnp lnr lns lpd lpe lpi lpl lpn lpp lpr lps lrd lri lrn lrp lrr lrs lsd lse lsi lsl lsn lsp lsr lss n-i ndd nde ndi ndl ndn ndp ndr nds ne- ned nee nei nel nen nep ner nes nid nie nii nil nin nip nir nis nld nle nli nll nln nlp nlr nls nne nni nnl nnn nnp nns npd npe npi npl npn npp npr nps nrd nre nri nrl nrn nrp nrr nrs nsd nse nsi nsl nsn nsp nsr nss p-p pdd pde pdi pdl pdn pdp pdr pds ped pee pei pel pen pep per pes pid pie pii pil pin pip pir pis pld ple pli pll pln plp plr pls pn- pnd pne pni pnl pnn pnp pnr pns ppd ppe ppi ppl ppn ppp ppr pps prd pre pri prl prn prp prr prs ps- psd pse psi psl psn psp psr pss rdd rde rdi rdl rdn rdp rdr rds re- red ree rei rel ren rep rer res rid rie rii ril rin rip rir ris rld rle rli rll rln rlp rlr rls rnd rni rnn rnp rnr rns rpd rpe rpi rpl rpn rpp rpr rps rrd rri rrl rrn rrp rrr rrs rsd rse rsi rsl rsn rsp rsr rss sdd sde sdi sdl sdn sdp sdr sds se- sed see sei sel sen sep ser ses sid sie sii sil sin sip sir sis sld sle sli sll sln slp slr sls snd sne sni snl snn snp snr sns spd spe spi spl spn spp spr sps sr- srd sre sri srl srn srp srr srs ss- ssd sse ssi ssl ssn ssp ssr sss