-er ddd dde ddl ddp ddr de- ded dee del dep der dl- dld dle dll dlp dlr dpd dpe dpl dpp dpr drd dre drl drp drr ed- edd ede edl edp edr eed eee eel eep eer eld ele ell elp elr ep- epd epe epl epp epr erd ere erl erp err l-p ldd lde ldl ldp ldr led lee lel lep ler lld lle lll llp llr lpd lpe lpl lpp lpr lrd lrp lrr p-p pdd pde pdl pdp pdr ped pee pel pep per pld ple pll plp plr ppd ppe ppl ppp ppr prd pre prl prp prr rdd rde rdl rdp rdr re- red ree rel rep rer rld rle rll rlp rlr rpd rpe rpl rpp rpr rrd rrl rrp rrr