-er -ey ddd dde ddo ddr ddt ddy de- ded dee deo der det dey dod doe doo dor dot doy drd dre dro drr drt dry dtd dte dto dtr dtt dty dy- dyd dye dyo dyr dyy ed- edd ede edo edr edt edy eed eee eeo eer eet eey eo- eod eoe eoo eor eot erd ere ero err ert ery etd ete eto etr ett ety eyd eye eyo eyr eyt odd ode odo odr odt oed oee oeo oer oet oey oo- ood ooo oor oot or- ord ore oro orr ort ory ot- otd ote oto otr ott oyd oye oyo rdd rde rdo rdr rdt rdy re- red ree reo rer ret rey rod roe roo ror rot roy rrd rrr rrt rtd rte rto rtr rtt rty ry- ryd rye ryo ryr ryy tdd tde tdo tdr tdt tdy te- ted tee teo ter tet tey to- tod toe too tor tot toy trd tre tro trr trt try ttd tte tto ttr ttt tty tyd tye tyo tyr tyt yde ydo ydt ydy yed yee yeo yer yet yey yod yoe yoo yor yot yoy yre yro yrt ytd yte yto ytr ytt yye yyt yyy