-er -ic c-- ccc ccd cce ccf cci ccr ccs cct cdc cdd cde cdf cdi cdr cds cdt ce- cec ced cee cef cei cer ces cet cfc cfd cfe cff cfi cfr cfs cft ci- cic cid cie cif cii cir cis cit crc crd cre crf cri crr crs crt csc csd cse csf csi csr css cst ctc ctd cte ctf cti ctr cts ctt dcc dcd dce dcf dci dcr dcs dct ddc ddd dde ddf ddi ddr dds ddt de- dec ded dee def dei der des det dfc dfd dfe dff dfi dfr dfs dft di- dic did die dif dii dir dis dit drc drd dre dri drr drs drt dsc dsd dse dsf dsi dsr dss dst dtc dtd dte dtf dti dtr dts dtt ec- ecc ecd ece ecf eci ecr ecs ect ed- edc edd ede edf edi edr eds edt eec eed eee eef eer ees eet ef- efc efd efe eff efi efr efs eft eic eid eie eif eii eir eis eit erc erd ere erf eri err ers ert es- esc esd ese esf esi esr ess est etc etd ete etf eti etr ets ett fcc fcd fce fcf fci fcr fcs fct fdc fdd fde fdf fdi fdr fds fdt fec fed fee fef fei fer fes fet ffc ffd ffe fff ffi ffr ffs fft fic fid fie fif fii fir fis fit frc frd fre frf fri frr frs frt fsc fsd fse fsf fsi fsr fss fst ftc ftd fte ftf fti ftr fts ftt i-d i-f icc icd ice icf ici icr ics ict idc idd ide idf idi idr ids idt ie- iec ied iee ief iei ier ies iet ifc ifd ife iff ifi ifr ifs ift iic iid iie iif iii iir iis iit ir- irc ird ire irf iri irr irs irt is- isc isd ise isf isi isr iss ist itc itd ite itf iti its itt rcc rcd rce rcf rci rcr rcs rct rdc rdd rde rdf rdi rdr rds rdt re- rec red ree ref rei rer res ret rfc rfd rfe rff rfi rfr rfs rft ric rid rie rif rii rir ris rit rrc rrd rrf rri rrr rrs rrt rsc rsd rse rsf rsi rsr rss rst rtc rtd rte rtf rti rtr rts rtt scc scd sce scf sci scr scs sct sdc sdd sde sdf sdi sdr sds sdt se- sec sed see sef sei ser ses set sfc sfd sfe sff sfi sfr sfs sft sic sid sie sif sii sir sis sit sr- src srd sre srf sri srr srs srt ss- ssc ssd sse ssf ssi ssr sss sst stc std ste stf sti str sts stt tcc tcd tce tcf tci tcr tcs tct tdc tdd tde tdf tdi tdr tds tdt te- tec ted tee tef tei ter tes tet tfc tfd tfe tff tfi tfr tfs tft tic tid tie tif tii tir tis tit trc trd tre trf tri trr trs trt tsc tsd tse tsf tsi tsr tss tst ttc ttd tte ttf tti ttr tts ttt