-er eee eel eem eer eet ele ell elm elr elt em- eme eml emm emr emt ere erl erm err ert ete etl etm etr ett lee lel lem ler let lle lll llm llr llt lme lml lmm lmr lmt lrm lrr lrt lte ltl ltm ltr ltt m-r mee mel mem mer met mle mll mlm mlr mlt mme mml mmm mmr mmt mre mrl mrm mrr mrt mte mtl mtm mtr mtt re- ree rel rem rer ret rle rll rlm rlr rlt rme rml rmm rmr rmt rrl rrm rrr rrt rte rtl rtm rtr rtt te- tee tel tem ter tet tle tll tlm tlr tlt tme tml tmm tmr tmt tre trl trm trr trt tte ttl ttm ttr ttt