-ly fff ffl ffr ffs ffu ffy flf fll flr fls flu fly frf frl frr frs fru fry fsf fsl fsr fss fsu fuf ful fur fus fuu fy- lff lfl lfr lfs lfu llf lll llr lls llu lly lrf lrr lrs lru lry lsf lsl lsr lss lsu luf lul lur lus luu luy lyf lyl lyr lys rff rfl rfr rfs rfu rlf rll rlr rls rlu rly rrf rrl rrr rrs rru rsf rsl rsr rss rsu ruf rur rus ruu ruy ry- ryf ryr rys ryu ryy sff sfl sfr sfs sfu slf sll slr sls slu sly sr- srf srl srr srs sry ss- ssf ssl ssr sss ssu suf sul sur sus suu suy sy- syl syr sys syu uff ufl ufr ufs ufu ulf ull ulr uls ulu uly ur- urf url urr urs uru ury usf usl usr uss usu uur uus uuu uys uyu yff yfr yfs yfu yll ylr yls yly yrf yrs yru ysl ysr yss ysu ysy yul yur yus yuu yuy yyf yys yyu yyy