fff ffi ffn ffo ffs ffy fif fii fin fis fnf fni fnn fns fof foi fon foo fos foy fsf fsi fsn fso fss fy- fyi fyn fyo i-f iff ifi ifn ifo ifs ify iif iii iin iio iis in- inf ini inn ino ins iny io- iof ioi ion ioo ios is- isf isi isn iso iss isy iyo iys iyy n-i nff nfi nfn nfo nfs nif nii nin nio nis nnf nni nnn nno nns no- nof noi non noo nos noy nsf nsi nsn nso nss nsy nyf nyn nyo nys nyy o-i of- off ofi ofn ofo ofs oif oii oin oio ois on- onf oni onn ono ons ony oo- oof ooi oon ooo oos os- osf osi osn oso oss oyi oyo oys sff sfi sfn sfo sfs sif sii sin sio sis snf sni snn sno sns sny sof soi son soo sos soy ss- ssf ssi ssn sso sss sy- syi syn sys yff yfs yif yii yin yio yis ynn yns yny yof yoi yon yoo yos yoy ysi yso yss ysy yyf yys yyy