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!7

srecord Superposition(Cl options) {}
srecord Sequence(L steps) {}
asclass GrammarClass {}
sclass Statement > GrammarClass {}
srecord grab(O what) {} // what: string or a GrammarClass

cprint {
  start-thread {
    Superposition main = Superposition(
      Sequence(
        grab("I"),
        grab("think"),
        Superposition(
          Sequence(
            grab("that"),
            grab(Statement)
          ),
          grab(Statement)
        )
      ),
    
      Sequence(
        grab("Do"),
        grab("you"),
        grab("think"),
        grab("that"),
        grab(statement),
        grab("?")
      ),
    
      grab(Statement)
    );
    
    printIndentedStruct(main);
  }
}