-er -ol ddd dde ddl ddo ddr ddt de- ded dee del deo der det dl- dld dle dll dlo dlr dlt dod doe dol doo dor dot drd dre drl dro drr drt dtd dte dtl dto dtr dtt ed- edd ede edl edo edr edt eed eee eel eeo eer eet eld ele ell elo elr elt eo- eod eoe eol eoo eor eot erd ere erl ero err ert etd ete etl eto etr ett ldd lde ldl ldo ldr ldt led lee lel leo ler let lld lle lll llo llr llt lod loe lol loo lor lot lrd lro lrr lrt ltd lte ltl lto ltr ltt odd ode odl odo odr odt oed oee oel oeo oer oet old ole oll olo olt oo- ood ool ooo oor oot or- ord ore orl oro orr ort ot- otd ote otl oto otr ott rdd rde rdl rdo rdr rdt re- red ree rel reo rer ret rld rle rll rlo rlr rlt rod roe rol roo ror rot rrd rrl rrr rrt rtd rte rtl rto rtr rtt tdd tde tdl tdo tdr tdt te- ted tee tel teo ter tet tld tle tll tlo tlr tlt to- tod toe tol too tor tot trd tre trl tro trr trt ttd tte ttl tto ttr ttt