-er eee eef eek een eer ees eet ef- efe eff efi efr efs eft eie eif eii eik ein eir eis eit eke ekf eki ekr eks ekt en- ene enf eni enk enn enr ens ent ere erf eri erk ern err ers ert es- ese esf esi esk esn esr ess est ete etf eti etk etn etr ets ett fee fef fei fek fen fer fes fet ffe fff ffi ffk ffn ffr ffs fft fie fif fii fik fin fir fis fit fkf fki fkk fkt fne fnf fni fnk fnn fnr fns fnt fre frf fri frk frn frr frs frt fse fsf fsi fsk fsn fsr fss fst fte ftf fti ftk ftn ftr fts ftt i-f ie- iee ief iei iek ien ier ies iet ife iff ifi ifn ifr ifs ift iie iif iii iin iir iis iit ike ikf iki ikk ikr iks ikt in- ine inf ini ink inn inr ins int ir- ire irf iri irk irn irr irs irt is- ise isf isi isk isn isr iss ist ite itf iti itk itn its itt k-t ke- kee kef kei kek ken ker kes ket kff kfi kfs kie kif kii kik kin kir kis kit kke kki kkk kkn kkr kks kkt kn- kne knf kni knk knn knr knt krf kri krk krn krr krs krt kse ksf ksi ksk ksn ksr kss kst kte ktf ktk ktn ktr kts ktt n-i ne- nee nef nei nek nen ner nes net nfe nff nfi nfk nfn nfr nfs nft nie nif nii nik nin nir nis nit nke nkf nki nkk nkn nkr nks nkt nne nnf nni nnk nnn nns nnt nre nrf nri nrk nrn nrr nrs nrt nse nsf nsi nsk nsn nsr nss nst nte ntf nti ntk ntn ntr nts ntt re- ree ref rei rek ren rer res ret rfe rff rfi rfk rfn rfr rfs rft rie rif rii rik rin rir ris rit rke rkf rkk rks rkt rni rnn rnr rns rnt rrf rri rrk rrn rrr rrs rrt rse rsf rsi rsk rsn rsr rss rst rte rtf rti rtk rtn rtr rts rtt se- see sef sei sek sen ser ses set sfe sff sfi sfk sfn sfr sfs sft sie sif sii sik sin sir sis sit sk- ske skf ski skk skr sks skt sne snf sni snk snn snr sns snt sr- sre srf sri srk srn srr srs srt ss- sse ssf ssi ssk ssn ssr sss sst ste stf sti stk stn str sts stt te- tee tef tei tek ten ter tes tet tfe tff tfi tfk tfn tfr tfs tft tie tif tii tik tin tir tis tit tke tkk tkr tks tkt tne tnf tni tnk tnn tnr tns tnt tre trf tri trk trn trr trs trt tse tsf tsi tsk tsn tsr tss tst tte ttf tti ttk ttn ttr tts ttt