-er -ol ddd dde ddl ddo ddr ddt ddu de- ded dee del deo der det deu dl- dld dle dll dlo dlr dlt dlu dod doe dol doo dor dot dou drd dre drl dro drr drt dru dtd dte dtl dto dtr dtt dtu dud due dul duo dur dut ed- edd ede edl edo edr edt edu eed eee eel eeo eer eet eld ele ell elo elr elt elu eo- eod eoe eol eoo eor eot eou erd ere erl ero err ert eru etd ete etl eto etr ett etu eu- eud eue eul eur eut ldd lde ldl ldo ldr ldt ldu led lee lel leo ler let leu lld lle lll llo llr llt llu lod loe lol loo lor lot lou lrd lro lrr lrt lru ltd lte ltl lto ltr ltt ltu lud lue lul luo lur lut luu odd ode odl odo odr odt odu oed oee oel oeo oer oet old ole oll olo olt olu oo- ood ool ooo oor oot or- ord ore orl oro orr ort oru ot- otd ote otl oto otr ott otu ou- oud oue oul ouo our out rdd rde rdl rdo rdr rdt rdu re- red ree rel reo rer ret reu rld rle rll rlo rlr rlt rlu rod roe rol roo ror rot rou rrd rrl rrr rrt rru rtd rte rtl rto rtr rtt rtu rud rue ruo rur rut ruu tdd tde tdl tdo tdr tdt tdu te- ted tee tel teo ter tet teu tld tle tll tlo tlr tlt tlu to- tod toe tol too tor tot tou trd tre trl tro trr trt tru ttd tte ttl tto ttr ttt ttu tud tue tul tuo tur tut tuu udd ude udl udo udr udt udu ued uee uel uer uet uld ule ull ulo ulr ult ulu uod uoe uol uoo uor uot ur- urd ure url uro urr urt uru utd ute utl uto utr utt utu uue uur uut uuu