-er eee eef eel eer ees eet ef- efe eff efi efl efr efs eft eie eif eii eil eir eis eit ele elf eli ell elr els elt ere erf eri erl err ers ert es- ese esf esi esl esr ess est ete etf eti etl etr ets ett fee fef fei fel fer fes fet ffe fff ffi ffl ffr ffs fft fie fif fii fil fir fis fit fle flf fli fll flr fls flt fre frf fri frl frr frs frt fse fsf fsi fsl fsr fss fst fte ftf fti ftl ftr fts ftt i-f ie- iee ief iei iel ier ies iet ife iff ifi ifl ifr ifs ift iie iif iii iil iir iis iit il- ile ilf ili ill ilr ils ilt ir- ire irf iri irl irr irs irt is- ise isf isi isl isr iss ist ite itf iti itl its itt lee lef lei lel ler les let lfe lff lfi lfl lfr lfs lft lie lif lii lil lir lis lit lle llf lli lll llr lls llt lrf lri lrr lrs lrt lse lsf lsi lsl lsr lss lst lte ltf lti ltl ltr lts ltt re- ree ref rei rel rer res ret rfe rff rfi rfl rfr rfs rft rie rif rii ril rir ris rit rle rlf rli rll rlr rls rlt rrf rri rrl rrr rrs rrt rse rsf rsi rsl rsr rss rst rte rtf rti rtl rtr rts rtt se- see sef sei sel ser ses set sfe sff sfi sfl sfr sfs sft sie sif sii sil sir sis sit sle slf sli sll slr sls slt sr- sre srf sri srl srr srs srt ss- sse ssf ssi ssl ssr sss sst ste stf sti stl str sts stt te- tee tef tei tel ter tes tet tfe tff tfi tfl tfr tfs tft tie tif tii til tir tis tit tle tlf tli tll tlr tls tlt tre trf tri trl trr trs trt tse tsf tsi tsl tsr tss tst tte ttf tti ttl ttr tts ttt