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

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