-er eee eef een eer ees ef- efe eff efi efr efs eie eif eii ein eir eis en- ene enf eni enn enr ens ere erf eri ern err ers es- ese esf esi esn esr ess fee fef fei fen fer fes ffe fff ffi ffn ffr ffs fie fif fii fin fir fis fne fnf fni fnn fnr fns fre frf fri frn frr frs fse fsf fsi fsn fsr fss i-f ie- iee ief iei ien ier ies ife iff ifi ifn ifr ifs iie iif iii iin iir iis in- ine inf ini inn inr ins ir- ire irf iri irn irr irs is- ise isf isi isn isr iss n-i ne- nee nef nei nen ner nes nfe nff nfi nfn nfr nfs nie nif nii nin nir nis nne nnf nni nnn nns nre nrf nri nrn nrr nrs nse nsf nsi nsn nsr nss re- ree ref rei ren rer res rfe rff rfi rfn rfr rfs rie rif rii rin rir ris rni rnn rnr rns rrf rri rrn rrr rrs rse rsf rsi rsn rsr rss se- see sef sei sen ser ses sfe sff sfi sfn sfr sfs sie sif sii sin sir sis sne snf sni snn snr sns sr- sre srf sri srn srr srs ss- sse ssf ssi ssn ssr sss