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

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發送短信 : Characterization and Transformation of Countryman Lines and R-Embeddable Coherent Trees in ZFC