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  _____    _    _     ______    ______   ______   
 / ____|| | || | ||  /_   _//  /_   _// |      \\ 
/ //---`' | || | ||  `-| |,-    -| ||-  |  --  // 
\ \\___   | \\_/ ||    | ||     _| ||_  |  --  \\ 
 \_____||  \____//     |_||    /_____// |______// 
  `----`    `---`      `-`'    `-----`  `------`

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Text this: Normal algebraic surfaces with trivial tricanonical divisors