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  ______   __   __    ______   _    _    __   _   
 /_   _//  \ \\/ //  /_____// | || | || | || | || 
   | ||     \ ` //   `____ `  | || | || | '--' || 
  _| ||      | ||    /___//   | \\_/ || | .--. || 
 /__//       |_||    `__ `     \____//  |_|| |_|| 
 `--`        `-`'    /_//       `---`   `-`  `-`  
                     `-`

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Text this: The graph relabeling problem and its variants