-er eee eef eel een eer eet ef- efe eff efl efr eft ele elf ell eln elr elt en- ene enf enl enn enr ent ere erf erl ern err ert ete etf etl etn etr ett fee fef fel fen fer fet ffe fff ffl ffn ffr fft fle flf fll fln flr flt fne fnf fnl fnn fnr fnt fre frf frl frn frr frt fte ftf ftl ftn ftr ftt lee lef lel len ler let lfe lff lfl lfn lfr lft lle llf lll lln llr llt lne lnl lnn lnr lnt lrf lrn lrr lrt lte ltf ltl ltr ltt ne- nee nef nel nen ner net nfe nff nfl nfn nfr nft nle nlf nll nln nlr nlt nne nnf nnl nnn nnt nre nrf nrl nrn nrr nrt nte ntf ntn ntr ntt re- ree ref rel ren rer ret rfe rff rfl rfn rfr rft rle rlf rll rln rlr rlt rnn rnr rnt rrf rrl rrn rrr rrt rte rtf rtl rtn rtr rtt te- tee tef tel ten ter tet tfe tff tfl tfn tfr tft tle tlf tll tln tlr tlt tne tnf tnl tnn tnr tnt tre trf trl trn trr trt tte ttf ttl ttn ttr ttt