-er -ic c-- ccc ccd cce ccf cci ccn ccr ccs cdc cdd cde cdf cdi cdn cdr cds ce- cec ced cee cef cei cen cer ces cfc cfd cfe cff cfi cfn cfr cfs ci- cic cid cie cif cii cin cir cis cn- cnc cnd cne cnf cni cnn cnr cns crc crd cre crf cri crn crr crs csc csd cse csf csi csn csr css dcc dcd dce dcf dci dcn dcr dcs ddc ddd dde ddf ddi ddn ddr dds de- dec ded dee def dei den der des dfc dfd dfe dff dfi dfn dfr dfs di- dic did die dif dii din dir dis dnc dnd dne dnf dni dnn dnr dns drc drd dre dri drn drr drs dsc dsd dse dsf dsi dsn dsr dss ec- ecc ecd ece ecf eci ecn ecr ecs ed- edc edd ede edf edi edn edr eds eec eed eee eef een eer ees ef- efc efd efe eff efi efr efs eic eid eie eif eii ein eir eis en- enc end ene enf eni enn enr ens erc erd ere erf eri ern err ers es- esc esd ese esf esi esn esr ess fcc fcd fce fcf fci fcn fcr fcs fdc fdd fde fdf fdi fdn fdr fds fec fed fee fef fei fen fer fes ffc ffd ffe fff ffi ffn ffr ffs fic fid fie fif fii fin fir fis fnc fnd fne fnf fni fnn fnr fns frc frd fre frf fri frn frr frs fsc fsd fse fsf fsi fsn fsr fss i-d i-f icc icd ice icf ici icn icr ics idc idd ide idf idi idn idr ids ie- iec ied iee ief iei ien ier ies ifc ifd ife iff ifi ifn ifr ifs iic iid iie iif iii iin iir iis in- inc ind ine inf ini inn inr ins ir- irc ird ire irf iri irn irr irs is- isc isd ise isf isi isn isr iss n-i ncc ncd nce ncf nci ncn ncr ncs ndc ndd nde ndf ndi ndn ndr nds ne- nec ned nee nef nei nen ner nes nfc nfd nfe nff nfi nfn nfr nfs nic nid nie nif nii nin nir nis nnc nne nnf nni nnn nns nrc nrd nre nrf nri nrn nrr nrs nsc nsd nse nsf nsi nsn nsr nss rcc rcd rce rcf rci rcn rcr rcs rdc rdd rde rdf rdi rdn rdr rds re- rec red ree ref rei ren rer res rfc rfd rfe rff rfi rfn rfr rfs ric rid rie rif rii rin rir ris rnc rnd rni rnn rnr rns rrc rrd rrf rri rrn rrr rrs rsc rsd rse rsf rsi rsn rsr rss scc scd sce scf sci scn scr scs sdc sdd sde sdf sdi sdn sdr sds se- sec sed see sef sei sen ser ses sfc sfd sfe sff sfi sfn sfr sfs sic sid sie sif sii sin sir sis snc snd sne snf sni snn snr sns sr- src srd sre srf sri srn srr srs ss- ssc ssd sse ssf ssi ssn ssr sss