-er eee eef eeg eel een eer eex ef- efe eff efg efi efl efr efx ege egf egg egi egl egn egr egx eie eif eig eii eil ein eir eix ele elf elg eli ell eln elr elx en- ene enf eng eni enl enn enr ere erf erg eri erl ern err ex- exe exi exl exr exx fee fef feg fei fel fen fer fex ffe fff ffg ffi ffl ffn ffr ffx fge fgf fgg fgi fgl fgn fgr fie fif fig fii fil fin fir fix fle flf flg fli fll fln flr flx fne fnf fng fni fnl fnn fnr fnx fre frf frg fri frl frn frr fxe fxg fxi fxr fxx ge- gee gef geg gei gel gen ger gex gfe gff gfi gfl gfr gfx ggg ggi ggn ggr gie gif gig gii gil gin gir gle glf glg gli gll gln glr glx gne gnf gni gnl gnn gnr gre grf grg gri grl grn grr grx gxf gxl i-f ie- iee ief ieg iei iel ien ier iex ife iff ifg ifi ifl ifn ifr ifx ige igf igg igi igl ign igr iie iif iii iil iin iir iix il- ile ilf ilg ili ill iln ilr ilx in- ine inf ing ini inl inn inr inx ir- ire irf irg iri irl irn irr irx ixe ixi ixl ixn lee lef leg lei lel len ler lex lfe lff lfg lfi lfl lfn lfr lfx lge lgf lgg lgi lgl lgn lgr lie lif lig lii lil lin lir lix lle llf llg lli lll lln llr lne lng lni lnl lnn lnr lrf lrg lri lrn lrr lxi lxr lxx n-i ne- nee nef neg nei nel nen ner nex nfe nff nfi nfl nfn nfr nge ngf ngg ngi ngl ngn nie nif nig nii nil nin nir nix nle nlf nlg nli nll nln nlr nlx nne nnf nng nni nnl nnn nre nrf nrg nri nrl nrn nrr nrx nxl re- ree ref reg rei rel ren rer rex rfe rff rfg rfi rfl rfn rfr rge rgf rgg rgi rgn rgr rgx rie rif rig rii ril rin rir rix rle rlf rlg rli rll rln rlr rng rni rnn rnr rrf rrg rri rrl rrn rrr rxr xee xeg xel xen xer xex xfe xfl xfn xfx xge xgi xgl xie xii xin xix xlf xlg xli xlr xrf xrx xxi xxl xxx