concrete GrammarGla of Grammar =
    NounGla
  , VerbGla
  , AdjectiveGla
  , AdverbGla
  , NumeralGla
  , SentenceGla
  , QuestionGla
  , RelativeGla
  , ConjunctionGla
  , PhraseGla
  , TextX
  , StructuralGla
  , IdiomGla
  , TenseX
  , NamesGla -- Not part of original Grammar, here to trigger compilation
  ;
