-er -ey ddd dde ddo ddr ddt ddu ddy de- ded dee deo der det deu dey dod doe doo dor dot dou doy drd dre dro drr drt dru dry dtd dte dto dtr dtt dtu dty dud due duo dur dut duy dy- dyd dye dyo dyr dyu dyy ed- edd ede edo edr edt edu edy eed eee eeo eer eet eey eo- eod eoe eoo eor eot eou erd ere ero err ert eru ery etd ete eto etr ett etu ety eu- eud eue eur eut eyd eye eyo eyr eyt odd ode odo odr odt odu oed oee oeo oer oet oey oo- ood ooo oor oot or- ord ore oro orr ort oru ory ot- otd ote oto otr ott otu ou- oud oue ouo our out oyd oye oyo rdd rde rdo rdr rdt rdu rdy re- red ree reo rer ret reu rey rod roe roo ror rot rou roy rrd rrr rrt rru rtd rte rto rtr rtt rtu rty rud rue ruo rur rut ruu ruy ry- ryd rye ryo ryr ryu ryy tdd tde tdo tdr tdt tdu tdy te- ted tee teo ter tet teu tey to- tod toe too tor tot tou toy trd tre tro trr trt tru try ttd tte tto ttr ttt ttu tty tud tue tuo tur tut tuu tuy tyd tye tyo tyr tyt udd ude udo udr udt udu ued uee uer uet uey uod uoe uoo uor uot ur- urd ure uro urr urt uru ury utd ute uto utr utt utu uty uue uur uut uuu uyo uyu yde ydo ydt ydy yed yee yeo yer yet yey yod yoe yoo yor yot you yoy yre yro yrt yru ytd yte yto ytr ytt ytu yud yue yuo yur yut yuu yuy yye yyt yyu yyy