-er ddd dde ddf ddi ddo ddr ddt de- ded dee def dei deo der det dfd dfe dff dfi dfo dfr dft di- did die dif dii dio dir dit dod doe dof doi doo dor dot drd dre dri dro drr drt dtd dte dtf dti dto dtr dtt ed- edd ede edf edi edo edr edt eed eee eef eeo eer eet ef- efd efe eff efi efo efr eft eid eie eif eii eio eir eit eo- eod eoe eof eoi eoo eor eot erd ere erf eri ero err ert etd ete etf eti eto etr ett fdd fde fdf fdi fdo fdr fdt fed fee fef fei feo fer fet ffd ffe fff ffi ffo ffr fft fid fie fif fii fir fit foe fof foi foo for fot frd fre frf fri fro frr frt ftd fte ftf fti fto ftr ftt i-d i-f idd ide idf idi ido idr idt ie- ied iee ief iei ier iet ifd ife iff ifi ifo ifr ift iid iie iif iii iio iir iit io- iod ioe iof ioi ioo ior iot ir- ird ire irf iri iro irr irt itd ite itf iti ito itt o-i odd ode odf odi odo odr odt oed oee oef oei oeo oer oet of- ofd ofe off ofi ofo ofr oft oid oie oif oii oio oir oit oo- ood oof ooi ooo oor oot or- ord ore orf ori oro orr ort ot- otd ote otf oti oto otr ott rdd rde rdf rdi rdo rdr rdt re- red ree ref rei reo rer ret rfd rfe rff rfi rfo rfr rft rid rie rif rii rio rir rit rod roe rof roi roo ror rot rrd rrf rri rrr rrt rtd rte rtf rti rto rtr rtt tdd tde tdf tdi tdo tdr tdt te- ted tee tef tei teo ter tet tfd tfe tff tfi tfo tfr tft tid tie tif tii tio tir tit to- tod toe tof toi too tor tot trd tre trf tri tro trr trt ttd tte ttf tti tto ttr ttt