-er eee eef eem een eer ees ef- efe eff efm efr efs em- eme emf emm emn emr ems emu en- ene enf enm enn enr ens enu ere erf erm ern err ers eru es- ese esf esm esn esr ess esu eu- eue euf eun eur eus fee fef fem fen fer fes feu ffe fff ffm ffn ffr ffs ffu fme fmf fmm fmn fmr fms fmu fne fnf fnm fnn fnr fns fnu fre frf frm frn frr frs fru fse fsf fsm fsn fsr fss fsu fue fuf fum fun fur fus fuu m-f m-r mee mef mem men mer mes meu mfe mff mfm mfn mfr mfs mfu mme mmf mmm mmn mmr mms mmu mne mnf mnm mnn mnr mns mnu mre mrf mrm mrn mrr mrs mru mse msf msm msn msr mss msu mue muf mum mun mur mus muu ne- nee nef nem nen ner nes neu nfe nff nfn nfr nfs nfu nme nmm nmn nmr nms nmu nne nnf nnm nnn nns nnu nre nrf nrm nrn nrr nrs nru nse nsf nsm nsn nsr nss nsu nue num nun nur nus nuu re- ree ref rem ren rer res reu rfe rff rfm rfn rfr rfs rfu rme rmf rmm rmn rmr rms rnm rnn rnr rns rnu rrf rrm rrn rrr rrs rru rse rsf rsm rsn rsr rss rsu rue ruf rum run rur rus ruu se- see sef sem sen ser ses seu sfe sff sfm sfn sfr sfs sfu sme smf smm smn smr sms smu sne snf snm snn snr sns snu sr- sre srf srm srn srr srs ss- sse ssf ssm ssn ssr sss ssu sue suf sum sun sur sus suu uee uef uem uen uer ues ufe uff ufm ufn ufr ufs ufu um- ume umf umm umn umr ums umu un- une unf unm unn unr uns unu ur- ure urf urm urn urr urs uru use usf usm usn usr uss usu uue uum uun uur uus uuu