-er ddd dde ddf ddi ddr ddt de- ded dee def dei der det dfd dfe dff dfi dfr dft di- did die dif dii dir dit drd dre dri drr drt dtd dte dtf dti dtr dtt ed- edd ede edf edi edr edt eed eee eef eer eet ef- efd efe eff efi efr eft eid eie eif eii eir eit erd ere erf eri err ert etd ete etf eti etr ett fdd fde fdf fdi fdr fdt fed fee fef fei fer fet ffd ffe fff ffi ffr fft fid fie fif fii fir fit frd fre frf fri frr frt ftd fte ftf fti ftr ftt i-d i-f idd ide idf idi idr idt ie- ied iee ief iei ier iet ifd ife iff ifi ifr ift iid iie iif iii iir iit ir- ird ire irf iri irr irt itd ite itf iti itt rdd rde rdf rdi rdr rdt re- red ree ref rei rer ret rfd rfe rff rfi rfr rft rid rie rif rii rir rit rrd rrf rri rrr rrt rtd rte rtf rti rtr rtt tdd tde tdf tdi tdr tdt te- ted tee tef tei ter tet tfd tfe tff tfi tfr tft tid tie tif tii tir tit trd tre trf tri trr trt ttd tte ttf tti ttr ttt