ddd dde ddn ddp dds ddt de- ded dee den dep des det dnd dne dnn dnp dns dnt dpd dpe dpn dpp dps dpt dsd dse dsn dsp dss dst dtd dte dtn dtp dts dtt ed- edd ede edn edp eds edt eed eee een eep ees eet en- end ene enn enp ens ent ep- epd epe epn epp eps ept es- esd ese esn esp ess est etd ete etn etp ets ett ndd nde ndn ndp nds ndt ne- ned nee nen nep nes net nne nnn nnp nns nnt npd npe npn npp nps npt nsd nse nsn nsp nss nst ntd nte ntn ntp nts ntt p-p pdd pde pdn pdp pds pdt ped pee pen pep pes pet pn- pnd pne pnn pnp pns pnt ppd ppe ppn ppp pps ppt ps- psd pse psn psp pss pst pt- ptd pte ptn ptp pts ptt sdd sde sdn sdp sds sdt se- sed see sen sep ses set snd sne snn snp sns snt spd spe spn spp sps spt ss- ssd sse ssn ssp sss sst std ste stn stp sts stt tdd tde tdn tdp tds tdt te- ted tee ten tep tes tet tnd tne tnn tnp tns tnt tpd tpe tpn tpp tps tpt tsd tse tsn tsp tss tst ttd tte ttn ttp tts ttt