-er -ey ddd dde ddf ddn ddo ddr ddu ddy de- ded dee def den deo der deu dey dfd dfe dff dfn dfo dfr dfu dnd dne dnf dnn dno dnr dny dod doe dof don doo dor dou doy drd dre drn dro drr dru dry dud due duf dun duo dur duy dy- dyd dye dyn dyo dyr dyu dyy ed- edd ede edf edn edo edr edu edy eed eee eef een eeo eer eey ef- efd efe eff efo efr en- end ene enf enn eno enr enu eny eo- eod eoe eof eon eoo eor eou erd ere erf ern ero err eru ery eu- eud eue euf eun eur eyd eye eyn eyo eyr fdd fde fdf fdn fdo fdr fdu fed fee fef fen feo fer feu fey ffd ffe fff ffn ffo ffr ffu ffy fnd fne fnf fnn fnr fnu foe fof fon foo for fou foy frd fre frf frn fro frr fru fry fud fue fuf fun fuo fur fuu fy- fye fyn fyo ndd nde ndf ndn ndo ndr ndu ndy ne- ned nee nef nen neo ner neu ney nfd nfe nff nfn nfo nfr nfu nne nnf nnn nno nnu no- nod noe nof non noo nor nou noy nrd nre nrf nrn nro nrr nru nry nud nue nun nuo nur nuu nuy nyd nye nyf nyn nyo nyu nyy odd ode odf odn odo odr odu oed oee oef oen oeo oer oey of- ofd ofe off ofn ofo ofr ofu on- ond one onf onn ono onr onu ony oo- ood oof oon ooo oor or- ord ore orf orn oro orr oru ory ou- oud oue ouf oun ouo our oyd oye oyo rdd rde rdf rdn rdo rdr rdu rdy re- red ree ref ren reo rer reu rey rfd rfe rff rfn rfo rfr rfu rnd rnn rno rnr rnu rny rod roe rof ron roo ror rou roy rrd rrf rrn rrr rru rud rue ruf run ruo rur ruu ruy ry- ryd rye ryf ryn ryo ryr ryu ryy udd ude udf udn udo udr udu ued uee uef uen uer uey ufd ufe uff ufn ufo ufr ufu un- und une unf unn uno unr unu uny uod uoe uon uoo uor ur- urd ure urf urn uro urr uru ury uue uun uur uuu uyo uyu yde ydn ydo ydy yed yee yef yen yeo yer yey yfd yfe yff yfr yfu ynd yne ynn ynu yny yod yoe yof yon yoo yor you yoy yre yrf yrn yro yru yud yue yun yuo yur yuu yuy yye yyf yyu yyy