[
 (program) {
  (variable_declaration) {
   (decl_specifiers) {
    const
    (builtintype) {
     unsigned
     short
     int
    }
   }
   (definition_list) {
    (lvalue) {
     (lvalue) {
      const
      *
      (lvalue) {
       a
      }
     }
     (dimension_list) {
      [
      15
      ]
     }
    }
   }
   ;
  }
 }
]