eee eef eeg eel ees ef- efe eff efg efi efl efs ege egf egg egi egl egs eie eif eig eii eil eis ele elf elg eli ell els es- ese esf esg esi esl ess fee fef feg fei fel fes ffe fff ffg ffi ffl ffs fge fgf fgg fgi fgl fgs fie fif fig fii fil fis fle flf flg fli fll fls fse fsf fsg fsi fsl fss ge- gee gef geg gei gel ges gfe gff gfi gfl gfs ggg ggi ggs gie gif gig gii gil gis gle glf glg gli gll gls gse gsf gsg gsi gsl gss i-f ie- iee ief ieg iei iel ies ife iff ifg ifi ifl ifs ige igf igg igi igl igs iie iif iii iil iis il- ile ilf ilg ili ill ils is- ise isf isg isi isl iss lee lef leg lei lel les lfe lff lfg lfi lfl lfs lge lgf lgg lgi lgl lgs lie lif lig lii lil lis lle llf llg lli lll lls lse lsf lsg lsi lsl lss se- see sef seg sei sel ses sfe sff sfg sfi sfl sfs sge sgf sgg sgi sgl sgs sie sif sig sii sil sis sle slf slg sli sll sls ss- sse ssf ssg ssi ssl sss