-er ddd dde ddf ddo ddq ddr ddt ddu de- ded dee def deo deq der det deu dfd dfe dff dfo dfq dfr dft dfu dod doe dof doo doq dor dot dou dqe drd dre dro drq drr drt dru dtd dte dtf dto dtr dtt dtu dud due duf duo dur dut ed- edd ede edf edo edr edt edu eed eee eef eeo eer eet ef- efd efe eff efo efr eft eo- eod eoe eof eoo eoq eor eot eou eqe eqf eqq eqt equ erd ere erf ero erq err ert eru etd ete etf eto etr ett etu eu- eud eue euf eur eut fdd fde fdf fdo fdr fdt fdu fed fee fef feo fer fet feu ffd ffe fff ffo ffr fft ffu foe fof foo for fot fou fqt frd fre frf fro frq frr frt fru ftd fte ftf fto ftq ftr ftt ftu fud fue fuf fuo fur fut fuu odd ode odf odo odr odt odu oed oee oef oeo oer oet of- ofd ofe off ofo ofr oft ofu oo- ood oof ooo oor oot oqo or- ord ore orf oro orr ort oru ot- otd ote otf oto otr ott otu ou- oud oue ouf ouo our out qdr qdt qed qee qef qeo qet qfd qfe qff qft qof qoo qor qqq qqu qre qrt qru qtd qto qtq qtr qu- qud que quo qur qut rdd rde rdf rdo rdr rdt rdu re- red ree ref reo req rer ret reu rfd rfe rff rfo rfq rfr rft rfu rod roe rof roo ror rot rou rrd rrf rrq rrr rrt rru rtd rte rtf rto rtq rtr rtt rtu rud rue ruf ruo rur rut ruu tdd tde tdf tdo tdr tdt tdu te- ted tee tef teo teq ter tet teu tfd tfe tff tfo tfr tft tfu to- tod toe tof too toq tor tot tou tqo trd tre trf tro trq trr trt tru ttd tte ttf tto ttr ttt ttu tud tue tuf tuo tur tut tuu udd ude udf udo udr udt udu ued uee uef uer uet ufd ufe uff ufo ufr uft ufu uod uoe uoo uor uot ur- urd ure urf uro urr urt uru utd ute utf uto utr utt utu uue uur uut uuu