ddd dde ddl ddp ddt de- ded dee del dep det dl- dld dle dll dlp dlt dpd dpe dpl dpp dpt dtd dte dtl dtp dtt ed- edd ede edl edp edt eed eee eel eep eet eld ele ell elp elt ep- epd epe epl epp ept etd ete etl etp ett l-p ldd lde ldl ldp ldt led lee lel lep let lld lle lll llp llt lpd lpe lpl lpp lpt ltd lte ltl ltp ltt p-p pdd pde pdl pdp pdt ped pee pel pep pet pld ple pll plp plt ppd ppe ppl ppp ppt pt- ptd pte ptl ptp ptt tdd tde tdl tdp tdt te- ted tee tel tep tet tld tle tll tlp tlt tpd tpe tpl tpp tpt ttd tte ttl ttp ttt