-er -ic c-- ccc ccd cce ccf cci ccr cct cdc cdd cde cdf cdi cdr cdt ce- cec ced cee cef cei cer cet cfc cfd cfe cff cfi cfr cft ci- cic cid cie cif cii cir cit crc crd cre crf cri crr crt ctc ctd cte ctf cti ctr ctt dcc dcd dce dcf dci dcr dct ddc ddd dde ddf ddi ddr ddt de- dec ded dee def dei der det dfc dfd dfe dff dfi dfr dft di- dic did die dif dii dir dit drc drd dre dri drr drt dtc dtd dte dtf dti dtr dtt ec- ecc ecd ece ecf eci ecr ect ed- edc edd ede edf edi edr edt eec eed eee eef eer eet ef- efc efd efe eff efi efr eft eic eid eie eif eii eir eit erc erd ere erf eri err ert etc etd ete etf eti etr ett fcc fcd fce fcf fci fcr fct fdc fdd fde fdf fdi fdr fdt fec fed fee fef fei fer fet ffc ffd ffe fff ffi ffr fft fic fid fie fif fii fir fit frc frd fre frf fri frr frt ftc ftd fte ftf fti ftr ftt i-d i-f icc icd ice icf ici icr ict idc idd ide idf idi idr idt ie- iec ied iee ief iei ier iet ifc ifd ife iff ifi ifr ift iic iid iie iif iii iir iit ir- irc ird ire irf iri irr irt itc itd ite itf iti itt rcc rcd rce rcf rci rcr rct rdc rdd rde rdf rdi rdr rdt re- rec red ree ref rei rer ret rfc rfd rfe rff rfi rfr rft ric rid rie rif rii rir rit rrc rrd rrf rri rrr rrt rtc rtd rte rtf rti rtr rtt tcc tcd tce tcf tci tcr tct tdc tdd tde tdf tdi tdr tdt te- tec ted tee tef tei ter tet tfc tfd tfe tff tfi tfr tft tic tid tie tif tii tir tit trc trd tre trf tri trr trt ttc ttd tte ttf tti ttr ttt