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  ______     ___      ____      ______    _  _   
 /_____//   / _ \\   |  _ \\   /_   _//  | \| || 
 `____ `   / //\ \\  | |_| ||   -| ||-   |  ' || 
 /___//   |  ___  || | .  //    _| ||_   | .  || 
 `__ `    |_||  |_|| |_|\_\\   /_____//  |_|\_|| 
 /_//     `-`   `-`  `-` --`   `-----`   `-` -`  
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發送短信 : Study of interleaver for turbo trellis code modulation