-er eee eef eek eem eer ees ef- efe eff efi efm efr efs eie eif eii eik eim eir eis eiu eke ekf eki ekr eks eku em- eme emf emi emk emm emr ems emu ere erf eri erk erm err ers eru es- ese esf esi esk esm esr ess esu eu- eue euf eui eur eus fee fef fei fek fem fer fes feu ffe fff ffi ffk ffm ffr ffs ffu fie fif fii fik fim fir fis fiu fkf fki fkk fkm fme fmf fmi fmm fmr fms fmu fre frf fri frk frm frr frs fru fse fsf fsi fsk fsm fsr fss fsu fue fuf fui fuk fum fur fus fuu i-f ie- iee ief iei iek iem ier ies ife iff ifi ifm ifr ifs ifu iie iif iii iim iir iis iiu ike ikf iki ikk ikr iks iku im- ime imf imi imm ims imu ir- ire irf iri irk irm irr irs iru is- ise isf isi isk ism isr iss isu iu- iue iui ium iur ius ke- kee kef kei kek kem ker kes kff kfi kfm kfs kfu kie kif kii kik kim kir kis kiu kke kki kkk kkm kkr kks kku kme kmf kmi kmk kmm kms kmu krf kri krk krr krs kru kse ksf ksi ksk ksm ksr kss ksu kue kui kuk kum kur kus kuu m-f m-r mee mef mei mek mem mer mes meu mfe mff mfi mfm mfr mfs mfu mi- mie mif mii mik mim mir mis miu mke mkk mkm mkr mks mku mme mmf mmi mmk mmm mmr mms mmu mre mrf mri mrk mrm mrr mrs mru mse msf msi msk msm msr mss msu mue muf mui muk mum mur mus muu re- ree ref rei rek rem rer res reu rfe rff rfi rfk rfm rfr rfs rfu rie rif rii rik rim rir ris rke rkf rkk rkm rks rku rme rmf rmi rmm rmr rms rrf rri rrk rrm rrr rrs rru rse rsf rsi rsk rsm rsr rss rsu rue ruf rui ruk rum rur rus ruu se- see sef sei sek sem ser ses seu sfe sff sfi sfk sfm sfr sfs sfu sie sif sii sik sim sir sis siu sk- ske skf ski skk skm skr sks sku sme smf smi smk smm smr sms smu sr- sre srf sri srk srm srr srs ss- sse ssf ssi ssk ssm ssr sss ssu sue suf sui suk sum sur sus suu uee uef uei uem uer ues ufe uff ufi ufm ufr ufs ufu uie uif uii uim uir uis uiu uke ukf uki ukk ukr uku um- ume umf umi umm umr ums umu ur- ure urf uri urk urm urr urs uru use usf usi usk usm usr uss usu uue uum uur uus uuu