iii iin iio iis in- ini inn ino ins iny io- ioi ion ioo ios is- isi isn iso iss isy iyo iys iyy n-i nii nin nio nis nni nnn nno nns no- noi non noo nos noy nsi nsn nso nss nsy nyn nyo nys nyy o-i oii oin oio ois on- oni onn ono ons ony oo- ooi oon ooo oos os- osi osn oso oss oyi oyo oys sii sin sio sis sni snn sno sns sny soi son soo sos soy ss- ssi ssn sso sss sy- syi syn sys yii yin yio yis ynn yns yny yoi yon yoo yos yoy ysi yso yss ysy yys yyy