-er -ey -ly eee eef eel eer ees eex eey ef- efe eff efl efr efs efx ele elf ell elr els elx ely ere erf erl err ers ery es- ese esf esl esr ess esx esy ex- exe exl exr exs exx exy eye eyl eyr eys fee fef fel fer fes fex fey ffe fff ffl ffr ffs ffx ffy fle flf fll flr fls flx fly fre frf frl frr frs fry fse fsf fsl fsr fss fsx fxe fxr fxs fxx fy- fye lee lef lel ler les lex ley lfe lff lfl lfr lfs lfx lle llf lll llr lls lly lrf lrr lrs lry lse lsf lsl lsr lss lxr lxx lye lyf lyl lyr lys lyx re- ree ref rel rer res rex rey rfe rff rfl rfr rfs rle rlf rll rlr rls rly rrf rrl rrr rrs rse rsf rsl rsr rss rsx rxr rxs ry- rye ryf ryr rys ryy se- see sef sel ser ses sex sey sfe sff sfl sfr sfs sfx sle slf sll slr sls slx sly sr- sre srf srl srr srs srx sry ss- sse ssf ssl ssr sss ssx sxl sxs sy- sye syl syr sys syx xee xel xer xes xex xfe xfl xfs xfx xlf xlr xls xrf xrx xry xsl xss xxl xxx xxy xyl xyr xyy yee yef yel yer yes yex yey yfe yff yfr yfs yle yll ylr yls yly yre yrf yrs yse ysl ysr yss ysy yxe yxy yye yyf yys yyy