-er eee eef eeg eel een eer ef- efe eff efg efl efr ege egf egg egl egn egr ele elf elg ell eln elr en- ene enf eng enl enn enr ere erf erg erl ern err fee fef feg fel fen fer ffe fff ffg ffl ffn ffr fge fgf fgg fgl fgn fgr fle flf flg fll fln flr fne fnf fng fnl fnn fnr fre frf frg frl frn frr ge- gee gef geg gel gen ger gfe gff gfl gfr ggg ggn ggr gle glf glg gll gln glr gne gnf gnl gnn gnr gre grf grg grl grn grr lee lef leg lel len ler lfe lff lfg lfl lfn lfr lge lgf lgg lgl lgn lgr lle llf llg lll lln llr lne lng lnl lnn lnr lrf lrg lrn lrr ne- nee nef neg nel nen ner nfe nff nfl nfn nfr nge ngf ngg ngl ngn nle nlf nlg nll nln nlr nne nnf nng nnl nnn nre nrf nrg nrl nrn nrr re- ree ref reg rel ren rer rfe rff rfg rfl rfn rfr rge rgf rgg rgn rgr rle rlf rlg rll rln rlr rng rnn rnr rrf rrg rrl rrn rrr