eee eef eek eel eem ef- efe eff efi efl efm eie eif eii eik eil eim eke ekf eki ekl ele elf eli elk ell elm em- eme emf emi emk eml emm fee fef fei fek fel fem ffe fff ffi ffk ffl ffm fie fif fii fik fil fim fkf fki fkk fkl fkm fle flf fli fll flm fme fmf fmi fml fmm i-f ie- iee ief iei iek iel iem ife iff ifi ifl ifm iie iif iii iil iim ike ikf iki ikk ikl il- ile ilf ili ilk ill ilm im- ime imf imi iml imm ke- kee kef kei kek kel kem kff kfi kfm kie kif kii kik kil kim kke kki kkk kkl kkm kl- klf kli klm kme kmf kmi kmk kml kmm lee lef lei lek lel lem lfe lff lfi lfk lfl lfm lie lif lii lik lil lim lkl lle llf lli llk lll llm lme lmf lmi lmk lml lmm m-f mee mef mei mek mel mem mfe mff mfi mfl mfm mi- mie mif mii mik mil mim mke mkk mkl mkm mle mlf mli mlk mll mlm mme mmf mmi mmk mml mmm