-er eee eef eel eer eet ef- efe eff efi efl efr eft eie eif eii eil eir eit ele elf eli ell elr elt ere erf eri erl err ert ete etf eti etl etr ett fee fef fei fel fer fet ffe fff ffi ffl ffr fft fie fif fii fil fir fit fle flf fli fll flr flt fre frf fri frl frr frt fte ftf fti ftl ftr ftt i-f ie- iee ief iei iel ier iet ife iff ifi ifl ifr ift iie iif iii iil iir iit il- ile ilf ili ill ilr ilt ir- ire irf iri irl irr irt ite itf iti itl itt lee lef lei lel ler let lfe lff lfi lfl lfr lft lie lif lii lil lir lit lle llf lli lll llr llt lrf lri lrr lrt lte ltf lti ltl ltr ltt re- ree ref rei rel rer ret rfe rff rfi rfl rfr rft rie rif rii ril rir rit rle rlf rli rll rlr rlt rrf rri rrl rrr rrt rte rtf rti rtl rtr rtt te- tee tef tei tel ter tet tfe tff tfi tfl tfr tft tie tif tii til tir tit tle tlf tli tll tlr tlt tre trf tri trl trr trt tte ttf tti ttl ttr ttt