-er ddd dde ddi ddn ddp ddr dds ddt de- ded dee dei den dep der des det di- did die dii din dip dir dis dit dnd dne dni dnn dnp dnr dns dnt dpd dpe dpi dpn dpp dpr dps dpt drd dre dri drn drp drr drs drt dsd dse dsi dsn dsp dsr dss dst dtd dte dti dtn dtp dtr dts dtt ed- edd ede edi edn edp edr eds edt eed eee een eep eer ees eet eid eie eii ein eip eir eis eit en- end ene eni enn enp enr ens ent ep- epd epe epi epn epp epr eps ept erd ere eri ern erp err ers ert es- esd ese esi esn esp esr ess est etd ete eti etn etp etr ets ett i-d idd ide idi idn idp idr ids idt ie- ied iee iei ien iep ier ies iet iid iie iii iin iip iir iis iit in- ind ine ini inn inp inr ins int ipd ipe ipi ipn ipp ipr ips ipt ir- ird ire iri irn irp irr irs irt is- isd ise isi isn isp isr iss ist itd ite iti itn itp its itt n-i ndd nde ndi ndn ndp ndr nds ndt ne- ned nee nei nen nep ner nes net nid nie nii nin nip nir nis nit nne nni nnn nnp nns nnt npd npe npi npn npp npr nps npt nrd nre nri nrn nrp nrr nrs nrt nsd nse nsi nsn nsp nsr nss nst ntd nte nti ntn ntp ntr nts ntt p-p pdd pde pdi pdn pdp pdr pds pdt ped pee pei pen pep per pes pet pid pie pii pin pip pir pis pit pn- pnd pne pni pnn pnp pnr pns pnt ppd ppe ppi ppn ppp ppr pps ppt prd pre pri prn prp prr prs prt ps- psd pse psi psn psp psr pss pst pt- ptd pte pti ptn ptp ptr pts ptt rdd rde rdi rdn rdp rdr rds rdt re- red ree rei ren rep rer res ret rid rie rii rin rip rir ris rit rnd rni rnn rnp rnr rns rnt rpd rpe rpi rpn rpp rpr rps rpt rrd rri rrn rrp rrr rrs rrt rsd rse rsi rsn rsp rsr rss rst rtd rte rti rtn rtp rtr rts rtt sdd sde sdi sdn sdp sdr sds sdt se- sed see sei sen sep ser ses set sid sie sii sin sip sir sis sit snd sne sni snn snp snr sns snt spd spe spi spn spp spr sps spt sr- srd sre sri srn srp srr srs srt ss- ssd sse ssi ssn ssp ssr sss sst std ste sti stn stp str sts stt tdd tde tdi tdn tdp tdr tds tdt te- ted tee tei ten tep ter tes tet tid tie tii tin tip tir tis tit tnd tne tni tnn tnp tnr tns tnt tpd tpe tpi tpn tpp tpr tps tpt trd tre tri trn trp trr trs trt tsd tse tsi tsn tsp tsr tss tst ttd tte tti ttn ttp ttr tts ttt