-er ddd dde ddl ddr dds de- ded dee del der des dl- dld dle dll dlr dls drd dre drl drr drs dsd dse dsl dsr dss ed- edd ede edl edr eds eed eee eel eer ees eld ele ell elr els erd ere erl err ers es- esd ese esl esr ess ldd lde ldl ldr lds led lee lel ler les lld lle lll llr lls lrd lrr lrs lsd lse lsl lsr lss rdd rde rdl rdr rds re- red ree rel rer res rld rle rll rlr rls rrd rrl rrr rrs rsd rse rsl rsr rss sdd sde sdl sdr sds se- sed see sel ser ses sld sle sll slr sls sr- srd sre srl srr srs ss- ssd sse ssl ssr sss