fff ffi ffn ffs ffy fif fii fin fis fnf fni fnn fns fsf fsi fsn fss fy- fyi fyn i-f iff ifi ifn ifs ify iif iii iin iis in- inf ini inn ins iny is- isf isi isn iss isy iys iyy n-i nff nfi nfn nfs nif nii nin nis nnf nni nnn nns nsf nsi nsn nss nsy nyf nyn nys nyy sff sfi sfn sfs sif sii sin sis snf sni snn sns sny ss- ssf ssi ssn sss sy- syi syn sys yff yfs yif yii yin yis ynn yns yny ysi yss ysy yyf yys yyy