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

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發送短信 : Construction of weavings in the plane