concrete GrammarBel of Grammar =
  TenseX,
  PhraseBel,
  NounBel,
  AdjectiveBel,
  AdverbBel,
  VerbBel,
  SentenceBel,
  QuestionBel,
  RelativeBel,
  ConjunctionBel,
  NumeralBel,
  NamesBel,
  StructuralBel,
  IdiomBel ** {
}