-er -ic c-- ccc cce ccf cci ccn ccr ccs ce- cec cee cef cei cen cer ces cfc cfe cff cfi cfn cfr cfs ci- cic cie cif cii cin cir cis cn- cnc cne cnf cni cnn cnr cns crc cre crf cri crn crr crs csc cse csf csi csn csr css ec- ecc ece ecf eci ecn ecr ecs eec eee eef een eer ees ef- efc efe eff efi efr efs eic eie eif eii ein eir eis en- enc ene enf eni enn enr ens erc ere erf eri ern err ers es- esc ese esf esi esn esr ess fcc fce fcf fci fcn fcr fcs fec fee fef fei fen fer fes ffc ffe fff ffi ffn ffr ffs fic fie fif fii fin fir fis fnc fne fnf fni fnn fnr fns frc fre frf fri frn frr frs fsc fse fsf fsi fsn fsr fss i-f icc ice icf ici icn icr ics ie- iec iee ief iei ien ier ies ifc ife iff ifi ifn ifr ifs iic iie iif iii iin iir iis in- inc ine inf ini inn inr ins ir- irc ire irf iri irn irr irs is- isc ise isf isi isn isr iss n-i ncc nce ncf nci ncn ncr ncs ne- nec nee nef nei nen ner nes nfc nfe nff nfi nfn nfr nfs nic nie nif nii nin nir nis nnc nne nnf nni nnn nns nrc nre nrf nri nrn nrr nrs nsc nse nsf nsi nsn nsr nss rcc rce rcf rci rcn rcr rcs re- rec ree ref rei ren rer res rfc rfe rff rfi rfn rfr rfs ric rie rif rii rin rir ris rnc rni rnn rnr rns rrc rrf rri rrn rrr rrs rsc rse rsf rsi rsn rsr rss scc sce scf sci scn scr scs se- sec see sef sei sen ser ses sfc sfe sff sfi sfn sfr sfs sic sie sif sii sin sir sis snc sne snf sni snn snr sns sr- src sre srf sri srn srr srs ss- ssc sse ssf ssi ssn ssr sss