eee eef eel eem ees eex ef- efe eff efi efl efm efs efx eie eif eii eil eim eis eiu eix ele elf eli ell elm els elu elx em- eme emf emi eml emm ems emu emx es- ese esf esi esl esm ess esu esx eu- eue euf eui eul eus eux ex- exe exi exl exs exu exx fee fef fei fel fem fes feu fex ffe fff ffi ffl ffm ffs ffu ffx fie fif fii fil fim fis fiu fix fle flf fli fll flm fls flu flx fme fmf fmi fml fmm fms fmu fmx fse fsf fsi fsl fsm fss fsu fsx fue fuf fui ful fum fus fuu fux fxe fxi fxm fxs fxu fxx i-f ie- iee ief iei iel iem ies iex ife iff ifi ifl ifm ifs ifu ifx iie iif iii iil iim iis iiu iix il- ile ilf ili ill ilm ils ilu ilx im- ime imf imi iml imm ims imu imx is- ise isf isi isl ism iss isu iu- iue iui ium ius ixe ixi ixl lee lef lei lel lem les leu lex lfe lff lfi lfl lfm lfs lfu lfx lie lif lii lil lim lis liu lix lle llf lli lll llm lls llu lme lmf lmi lml lmm lms lmu lse lsf lsi lsl lsm lss lsu lue luf lui lul lum lus luu lux lxi lxx m-f mee mef mei mel mem mes meu mex mfe mff mfi mfl mfm mfs mfu mi- mie mif mii mil mim mis miu mix mle mlf mli mll mlm mls mlu mlx mme mmf mmi mml mmm mms mmu mmx mse msf msi msl msm mss msu msx mue muf mui mul mum mus muu mux mxi mxl mxs mxu se- see sef sei sel sem ses seu sex sfe sff sfi sfl sfm sfs sfu sfx sie sif sii sil sim sis siu six sle slf sli sll slm sls slu slx sme smf smi sml smm sms smu smx ss- sse ssf ssi ssl ssm sss ssu ssx sue suf sui sul sum sus suu sux sxi sxl sxm sxs sxu uee uef uei uel uem ues ufe uff ufi ufl ufm ufs ufu ufx uie uif uii uil uim uis uiu ule ulf uli ull ulm uls ulu um- ume umf umi uml umm ums umu use usf usi usl usm uss usu usx uue uum uus uuu uxf uxu xee xel xem xes xeu xex xfe xfl xfm xfs xfx xie xii xis xiu xix xlf xli xlm xls xmf xmi xml xmm xms xmu xmx xsi xsl xsm xss xue xui xul xus xxi xxl xxx