-er eee eef eek eem eer ees eet ef- efe eff efi efm efr efs eft eie eif eii eik eim eir eis eit eke ekf eki ekr eks ekt em- eme emf emi emk emm emr ems emt ere erf eri erk erm err ers ert es- ese esf esi esk esm esr ess est ete etf eti etk etm etr ets ett fee fef fei fek fem fer fes fet ffe fff ffi ffk ffm ffr ffs fft fie fif fii fik fim fir fis fit fkf fki fkk fkm fkt fme fmf fmi fmm fmr fms fmt fre frf fri frk frm frr frs frt fse fsf fsi fsk fsm fsr fss fst fte ftf fti ftk ftm ftr fts ftt i-f ie- iee ief iei iek iem ier ies iet ife iff ifi ifm ifr ifs ift iie iif iii iim iir iis iit ike ikf iki ikk ikr iks ikt im- ime imf imi imm ims imt ir- ire irf iri irk irm irr irs irt is- ise isf isi isk ism isr iss ist ite itf iti itk itm its itt k-t ke- kee kef kei kek kem ker kes ket kff kfi kfm kfs kie kif kii kik kim kir kis kit kke kki kkk kkm kkr kks kkt kme kmf kmi kmk kmm kms kmt krf kri krk krr krs krt kse ksf ksi ksk ksm ksr kss kst kte ktf ktk ktm ktr kts ktt m-f m-r mee mef mei mek mem mer mes met mfe mff mfi mfm mfr mfs mft mi- mie mif mii mik mim mir mis mit mke mkk mkm mkr mks mkt mme mmf mmi mmk mmm mmr mms mmt mre mrf mri mrk mrm mrr mrs mrt mse msf msi msk msm msr mss mst mte mtf mti mtk mtm mtr mts mtt re- ree ref rei rek rem rer res ret rfe rff rfi rfk rfm rfr rfs rft rie rif rii rik rim rir ris rit rke rkf rkk rkm rks rkt rme rmf rmi rmm rmr rms rmt rrf rri rrk rrm rrr rrs rrt rse rsf rsi rsk rsm rsr rss rst rte rtf rti rtk rtm rtr rts rtt se- see sef sei sek sem ser ses set sfe sff sfi sfk sfm sfr sfs sft sie sif sii sik sim sir sis sit sk- ske skf ski skk skm skr sks skt sme smf smi smk smm smr sms smt sr- sre srf sri srk srm srr srs srt ss- sse ssf ssi ssk ssm ssr sss sst ste stf sti stk stm str sts stt te- tee tef tei tek tem ter tes tet tfe tff tfi tfk tfm tfr tfs tft tie tif tii tik tim tir tis tit tke tkk tkm tkr tks tkt tme tmf tmi tmk tmm tmr tms tmt tre trf tri trk trm trr trs trt tse tsf tsi tsk tsm tsr tss tst tte ttf tti ttk ttm ttr tts ttt