-er eee eef eem eer eet ef- efe eff efi efm efr eft eie eif eii eim eir eit em- eme emf emi emm emr emt ere erf eri erm err ert ete etf eti etm etr ett fee fef fei fem fer fet ffe fff ffi ffm ffr fft fie fif fii fim fir fit fme fmf fmi fmm fmr fmt fre frf fri frm frr frt fte ftf fti ftm ftr ftt i-f ie- iee ief iei iem ier iet ife iff ifi ifm ifr ift iie iif iii iim iir iit im- ime imf imi imm imt ir- ire irf iri irm irr irt ite itf iti itm itt m-f m-r mee mef mei mem mer met mfe mff mfi mfm mfr mft mi- mie mif mii mim mir mit mme mmf mmi mmm mmr mmt mre mrf mri mrm mrr mrt mte mtf mti mtm mtr mtt re- ree ref rei rem rer ret rfe rff rfi rfm rfr rft rie rif rii rim rir rit rme rmf rmi rmm rmr rmt rrf rri rrm rrr rrt rte rtf rti rtm rtr rtt te- tee tef tei tem ter tet tfe tff tfi tfm tfr tft tie tif tii tim tir tit tme tmf tmi tmm tmr tmt tre trf tri trm trr trt tte ttf tti ttm ttr ttt