eee eef eeg eel ees ef- efe eff efg efl efs ege egf egg egl egs ele elf elg ell els es- ese esf esg esl ess fee fef feg fel fes ffe fff ffg ffl ffs fge fgf fgg fgl fgs fle flf flg fll fls fse fsf fsg fsl fss ge- gee gef geg gel ges gfe gff gfl gfs ggg ggs gle glf glg gll gls gse gsf gsg gsl gss lee lef leg lel les lfe lff lfg lfl lfs lge lgf lgg lgl lgs lle llf llg lll lls lse lsf lsg lsl lss se- see sef seg sel ses sfe sff sfg sfl sfs sge sgf sgg sgl sgs sle slf slg sll sls ss- sse ssf ssg ssl sss