-er -ol ddd dde ddl ddo ddr de- ded dee del deo der dl- dld dle dll dlo dlr dod doe dol doo dor drd dre drl dro drr ed- edd ede edl edo edr eed eee eel eeo eer eld ele ell elo elr eo- eod eoe eol eoo eor erd ere erl ero err ldd lde ldl ldo ldr led lee lel leo ler lld lle lll llo llr lod loe lol loo lor lrd lro lrr odd ode odl odo odr oed oee oel oeo oer old ole oll olo oo- ood ool ooo oor or- ord ore orl oro orr rdd rde rdl rdo rdr re- red ree rel reo rer rld rle rll rlo rlr rod roe rol roo ror rrd rrl rrr