-er eee eel eer ees eet eie eii eil eir eis eit ele eli ell elr els elt ere eri erl err ers ert es- ese esi esl esr ess est ete eti etl etr ets ett ie- iee iei iel ier ies iet iie iii iil iir iis iit il- ile ili ill ilr ils ilt ir- ire iri irl irr irs irt is- ise isi isl isr iss ist ite iti itl its itt lee lei lel ler les let lie lii lil lir lis lit lle lli lll llr lls llt lri lrr lrs lrt lse lsi lsl lsr lss lst lte lti ltl ltr lts ltt re- ree rei rel rer res ret rie rii ril rir ris rit rle rli rll rlr rls rlt rri rrl rrr rrs rrt rse rsi rsl rsr rss rst rte rti rtl rtr rts rtt se- see sei sel ser ses set sie sii sil sir sis sit sle sli sll slr sls slt sr- sre sri srl srr srs srt ss- sse ssi ssl ssr sss sst ste sti stl str sts stt te- tee tei tel ter tes tet tie tii til tir tis tit tle tli tll tlr tls tlt tre tri trl trr trs trt tse tsi tsl tsr tss tst tte tti ttl ttr tts ttt