-er ddd dde ddl ddr dds de- ded dee del der des dev dl- dld dle dll dlr dls dlv drd dre drl drr drs drv dsd dse dsl dsr dss dsv dvd dve dvl dvr dvs ed- edd ede edl edr eds eed eee eel eer ees eev eld ele ell elr els elv erd ere erl err ers erv es- esd ese esl esr ess esv evd eve evl evr evs evv ldd lde ldl ldr lds ldv led lee lel ler les lev lld lle lll llr lls llv lrd lrr lrs lrv lsd lse lsl lsr lss lsv lvd lve lvl lvr lvs lvv rdd rde rdl rdr rds rdv re- red ree rel rer res rev rld rle rll rlr rls rrd rrl rrr rrs rsd rse rsl rsr rss rsv rvd rve rvl rvr rvs rvv sdd sde sdl sdr sds sdv se- sed see sel ser ses sev sld sle sll slr sls slv sr- srd sre srl srr srs srv ss- ssd sse ssl ssr sss ssv svd sve svl svr svs svv v-e vdd vde vdl vdr vds vdv ved vee vel ver ves vl- vld vle vll vls vlv vrd vre vrr vrs vsd vse vsl vsr vss vsv vvr vvs vvv