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            _____     _____     ______    _____   
    ___    |  ___||  |__  //   /_   _//  /  ___|| 
   /   ||  | ||__      / //     -| ||-  | // __   
  | [] ||  | ||__     / //__    _| ||_  | \\_\ || 
   \__ ||  |_____||  /_____||  /_____//  \____//  
    -|_||  `-----`   `-----`   `-----`    `---`   
     `-`

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Text this: Relative difference sets with n = 2