-er eee eef eek eel een eer ef- efe eff efi efl efr eie eif eii eik eil ein eir eke ekf eki ekl ekr ele elf eli elk ell eln elr en- ene enf eni enk enl enn enr ere erf eri erk erl ern err fee fef fei fek fel fen fer ffe fff ffi ffk ffl ffn ffr fie fif fii fik fil fin fir fkf fki fkk fkl fle flf fli fll fln flr fne fnf fni fnk fnl fnn fnr fre frf fri frk frl frn frr i-f ie- iee ief iei iek iel ien ier ife iff ifi ifl ifn ifr iie iif iii iil iin iir ike ikf iki ikk ikl ikr il- ile ilf ili ilk ill iln ilr in- ine inf ini ink inl inn inr ir- ire irf iri irk irl irn irr ke- kee kef kei kek kel ken ker kff kfi kie kif kii kik kil kin kir kke kki kkk kkl kkn kkr kl- klf kli klr kn- kne knf kni knk knl knn knr krf kri krk krl krn krr lee lef lei lek lel len ler lfe lff lfi lfk lfl lfn lfr lie lif lii lik lil lin lir lkl lkr lle llf lli llk lll lln llr lne lni lnk lnl lnn lnr lrf lri lrk lrn lrr n-i ne- nee nef nei nek nel nen ner nfe nff nfi nfk nfl nfn nfr nie nif nii nik nil nin nir nke nkf nki nkk nkn nkr nle nlf nli nlk nll nln nlr nne nnf nni nnk nnl nnn nre nrf nri nrk nrl nrn nrr re- ree ref rei rek rel ren rer rfe rff rfi rfk rfl rfn rfr rie rif rii rik ril rin rir rke rkf rkk rle rlf rli rll rln rlr rni rnn rnr rrf rri rrk rrl rrn rrr