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      1 
      2 grammar t058rewriteAST34;
      3 options {language=JavaScript;output=AST;}
      4 tokens {BLOCK;}
      5 a : b b^ ; // 2nd b matches only an INT; can make it root
      6 b : ID INT -> INT ID
      7   | INT
      8   ;
      9 ID : 'a'..'z'+ ;
     10 INT : '0'..'9'+;
     11 WS : (' '|'\n') {$channel=HIDDEN;} ;