-er eee eef eek eem eer ees ef- efe eff efm efr efs eke ekf ekr eks eku em- eme emf emk emm emr ems emu ere erf erk erm err ers eru es- ese esf esk esm esr ess esu eu- eue euf eur eus fee fef fek fem fer fes feu ffe fff ffk ffm ffr ffs ffu fkf fkk fkm fme fmf fmm fmr fms fmu fre frf frk frm frr frs fru fse fsf fsk fsm fsr fss fsu fue fuf fuk fum fur fus fuu ke- kee kef kek kem ker kes kff kfm kfs kfu kke kkk kkm kkr kks kku kme kmf kmk kmm kms kmu krf krk krr krs kru kse ksf ksk ksm ksr kss ksu kue kuk kum kur kus kuu m-f m-r mee mef mek mem mer mes meu mfe mff mfm mfr mfs mfu mke mkk mkm mkr mks mku mme mmf mmk mmm mmr mms mmu mre mrf mrk mrm mrr mrs mru mse msf msk msm msr mss msu mue muf muk mum mur mus muu re- ree ref rek rem rer res reu rfe rff rfk rfm rfr rfs rfu rke rkf rkk rkm rks rku rme rmf rmm rmr rms rrf rrk rrm rrr rrs rru rse rsf rsk rsm rsr rss rsu rue ruf ruk rum rur rus ruu se- see sef sek sem ser ses seu sfe sff sfk sfm sfr sfs sfu sk- ske skf skk skm skr sks sku sme smf smk smm smr sms smu sr- sre srf srk srm srr srs ss- sse ssf ssk ssm ssr sss ssu sue suf suk sum sur sus suu uee uef uem uer ues ufe uff ufm ufr ufs ufu uke ukf ukk ukr uku um- ume umf umm umr ums umu ur- ure urf urk urm urr urs uru use usf usk usm usr uss usu uue uum uur uus uuu