-er ddd dde ddf ddi ddo ddr ddu de- ded dee def dei deo der deu dfd dfe dff dfi dfo dfr dfu di- did die dif dii dio dir diu dod doe dof doi doo dor dou drd dre dri dro drr dru dud due duf dui duo dur ed- edd ede edf edi edo edr edu eed eee eef eeo eer ef- efd efe eff efi efo efr eid eie eif eii eio eir eiu eo- eod eoe eof eoi eoo eor eou erd ere erf eri ero err eru eu- eud eue euf eui eur fdd fde fdf fdi fdo fdr fdu fed fee fef fei feo fer feu ffd ffe fff ffi ffo ffr ffu fid fie fif fii fir fiu foe fof foi foo for fou frd fre frf fri fro frr fru fud fue fuf fui fuo fur fuu i-d i-f idd ide idf idi ido idr idu ie- ied iee ief iei ier ifd ife iff ifi ifo ifr ifu iid iie iif iii iio iir iiu io- iod ioe iof ioi ioo ior iou ir- ird ire irf iri iro irr iru iu- iud iue iui iur o-i odd ode odf odi odo odr odu oed oee oef oei oeo oer of- ofd ofe off ofi ofo ofr ofu oid oie oif oii oio oir oiu oo- ood oof ooi ooo oor or- ord ore orf ori oro orr oru ou- oud oue ouf oui ouo our rdd rde rdf rdi rdo rdr rdu re- red ree ref rei reo rer reu rfd rfe rff rfi rfo rfr rfu rid rie rif rii rio rir rod roe rof roi roo ror rou rrd rrf rri rrr rru rud rue ruf rui ruo rur ruu udd ude udf udi udo udr udu ued uee uef uei uer ufd ufe uff ufi ufo ufr ufu uid uie uif uii uio uir uiu uod uoe uoo uor ur- urd ure urf uri uro urr uru uue uur uuu