concrete GrammarSqi of Grammar =
  NounSqi,
  VerbSqi,
  AdjectiveSqi,
  AdverbSqi,
  SentenceSqi,
  QuestionSqi,
  RelativeSqi,
  ConjunctionSqi,
  NumeralSqi,
  PhraseSqi,
  IdiomSqi,
  NamesSqi,
  StructuralSqi
  ** {

} ;