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 _    _     _____     _  _     _____             
| || | ||  |  ___||  | \| ||  |  ___||     ___   
| || | ||  | ||__    |  ' ||  | ||__      /   || 
| \\_/ ||  | ||__    | .  ||  | ||__     | [] || 
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  `---`    `-----`   `-` -`   `-----`      -|_|| 
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發送短信 : The Variance Ratio Test with Stable Paretian Errors