! Changes to be applied to an fst to get spell-relax with tags (by virtue of
! flag diacritics):

 á (->) a "@P.SpellRlx.ON@" ,
 a (->) á "@P.SpellRlx.ON@" ;
! č (->) c "@P.SpellRlx.ON@" ,
! c (->) č "@P.SpellRlx.ON@" ,
! š (->) s "@P.SpellRlx.ON@" ,
! z (->) ž "@P.SpellRlx.ON@" ,
! ž (->) z "@P.SpellRlx.ON@" ;