eee eef eek eem een ees ef- efe eff efi efm efs eie eif eii eik eim ein eis eke ekf eki eks em- eme emf emi emk emm emn ems en- ene enf eni enk enm enn ens es- ese esf esi esk esm esn ess fee fef fei fek fem fen fes ffe fff ffi ffk ffm ffn ffs fie fif fii fik fim fin fis fkf fki fkk fkm fme fmf fmi fmm fmn fms fne fnf fni fnk fnm fnn fns fse fsf fsi fsk fsm fsn fss i-f ie- iee ief iei iek iem ien ies ife iff ifi ifm ifn ifs iie iif iii iim iin iis ike ikf iki ikk iks im- ime imf imi imm imn ims in- ine inf ini ink inm inn ins is- ise isf isi isk ism isn iss ke- kee kef kei kek kem ken kes kff kfi kfm kfs kie kif kii kik kim kin kis kke kki kkk kkm kkn kks kme kmf kmi kmk kmm kms kn- kne knf kni knk knm knn kse ksf ksi ksk ksm ksn kss m-f mee mef mei mek mem men mes mfe mff mfi mfm mfn mfs mi- mie mif mii mik mim min mis mke mkk mkm mkn mks mme mmf mmi mmk mmm mmn mms mne mnf mni mnk mnm mnn mns mse msf msi msk msm msn mss n-i ne- nee nef nei nek nem nen nes nfe nff nfi nfk nfn nfs nie nif nii nik nim nin nis nke nkf nki nkk nkm nkn nks nme nmi nmk nmm nmn nms nne nnf nni nnk nnm nnn nns nse nsf nsi nsk nsm nsn nss se- see sef sei sek sem sen ses sfe sff sfi sfk sfm sfn sfs sie sif sii sik sim sin sis sk- ske skf ski skk skm sks sme smf smi smk smm smn sms sne snf sni snk snm snn sns ss- sse ssf ssi ssk ssm ssn sss