ddd dde ddl ddp dds ddt de- ded dee del dep des det dl- dld dle dll dlp dls dlt dpd dpe dpl dpp dps dpt dsd dse dsl dsp dss dst dtd dte dtl dtp dts dtt ed- edd ede edl edp eds edt eed eee eel eep ees eet eld ele ell elp els elt ep- epd epe epl epp eps ept es- esd ese esl esp ess est etd ete etl etp ets ett l-p ldd lde ldl ldp lds ldt led lee lel lep les let lld lle lll llp lls llt lpd lpe lpl lpp lps lpt lsd lse lsl lsp lss lst ltd lte ltl ltp lts ltt p-p pdd pde pdl pdp pds pdt ped pee pel pep pes pet pld ple pll plp pls plt ppd ppe ppl ppp pps ppt ps- psd pse psl psp pss pst pt- ptd pte ptl ptp pts ptt sdd sde sdl sdp sds sdt se- sed see sel sep ses set sld sle sll slp sls slt spd spe spl spp sps spt ss- ssd sse ssl ssp sss sst std ste stl stp sts stt tdd tde tdl tdp tds tdt te- ted tee tel tep tes tet tld tle tll tlp tls tlt tpd tpe tpl tpp tps tpt tsd tse tsl tsp tss tst ttd tte ttl ttp tts ttt