-er -ic bbb bbc bbd bbe bbf bbi bbr bbt bcb bcc bcd bce bcf bci bcr bct bdb bdc bdd bde bdf bdi bdr bdt be- beb bec bed bee bef bei ber bet bfb bfc bfd bfe bff bfi bfr bft bi- bib bic bid bie bif bii bir bit brb brd bre brf bri brr brt btb btc btd bte btf bti btr btt c-- cbb cbc cbd cbe cbf cbi cbr cbt ccb ccc ccd cce ccf cci ccr cct cdb cdc cdd cde cdf cdi cdr cdt ce- ceb cec ced cee cef cei cer cet cfb cfc cfd cfe cff cfi cfr cft ci- cib cic cid cie cif cii cir cit crb crc crd cre crf cri crr crt ctb ctc ctd cte ctf cti ctr ctt dbb dbc dbd dbe dbf dbi dbr dbt dcb dcc dcd dce dcf dci dcr dct ddb ddc ddd dde ddf ddi ddr ddt de- deb dec ded dee def dei der det dfb dfc dfd dfe dff dfi dfr dft di- dib dic did die dif dii dir dit drb drc drd dre dri drr drt dtb dtc dtd dte dtf dti dtr dtt ebb ebc ebd ebe ebf ebi ebr ebt ec- ecb ecc ecd ece ecf eci ecr ect ed- edb edc edd ede edf edi edr edt eeb eec eed eee eef eer eet ef- efb efc efd efe eff efi efr eft eib eic eid eie eif eii eir eit erb erc erd ere erf eri err ert etb etc etd ete etf eti etr ett fbb fbc fbd fbe fbf fbi fbr fbt fcb fcc fcd fce fcf fci fcr fct fdb fdc fdd fde fdf fdi fdr fdt feb fec fed fee fef fei fer fet ffc ffd ffe fff ffi ffr fft fib fic fid fie fif fii fir fit frb frc frd fre frf fri frr frt ftb ftc ftd fte ftf fti ftr ftt i-d i-f ibb ibc ibd ibe ibf ibi ibr ibt icb icc icd ice icf ici icr ict idb idc idd ide idf idi idr idt ie- iec ied iee ief iei ier iet ifb ifc ifd ife iff ifi ifr ift iib iic iid iie iif iii iir iit ir- irb irc ird ire irf iri irr irt itb itc itd ite itf iti itt rbb rbc rbd rbe rbf rbi rbr rbt rcb rcc rcd rce rcf rci rcr rct rdb rdc rdd rde rdf rdi rdr rdt re- reb rec red ree ref rei rer ret rfb rfc rfd rfe rff rfi rfr rft rib ric rid rie rif rii rir rit rrb rrc rrd rrf rri rrr rrt rtb rtc rtd rte rtf rti rtr rtt tbb tbc tbd tbe tbf tbi tbr tbt tcb tcc tcd tce tcf tci tcr tct tdb tdc tdd tde tdf tdi tdr tdt te- teb tec ted tee tef tei ter tet tfb tfc tfd tfe tff tfi tfr tft tib tic tid tie tif tii tir tit trb trc trd tre trf tri trr trt ttb ttc ttd tte ttf tti ttr ttt