-er ddd dde ddi ddn ddr dds de- ded dee dei den der des di- did die dii din dir dis dnd dne dni dnn dnr dns drd dre dri drn drr drs dsd dse dsi dsn dsr dss ed- edd ede edi edn edr eds eed eee een eer ees eid eie eii ein eir eis en- end ene eni enn enr ens erd ere eri ern err ers es- esd ese esi esn esr ess i-d idd ide idi idn idr ids ie- ied iee iei ien ier ies iid iie iii iin iir iis in- ind ine ini inn inr ins ir- ird ire iri irn irr irs is- isd ise isi isn isr iss n-i ndd nde ndi ndn ndr nds ne- ned nee nei nen ner nes nid nie nii nin nir nis nne nni nnn nns nrd nre nri nrn nrr nrs nsd nse nsi nsn nsr nss rdd rde rdi rdn rdr rds re- red ree rei ren rer res rid rie rii rin rir ris rnd rni rnn rnr rns rrd rri rrn rrr rrs rsd rse rsi rsn rsr rss sdd sde sdi sdn sdr sds se- sed see sei sen ser ses sid sie sii sin sir sis snd sne sni snn snr sns sr- srd sre sri srn srr srs ss- ssd sse ssi ssn ssr sss