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  ______     ___      ____       ___     _____    
 /_   _//   / _ \\   |  _ \\    / _ \\  |  __ \\  
   | ||    | / \ ||  | |_| ||  / //\ \\ | |  \ || 
  _| ||    | \_/ ||  | .  //  |  ___  ||| |__/ || 
 /__//      \___//   |_|\_\\  |_||  |_|||_____//  
 `--`       `---`    `-` --`  `-`   `-`  -----`

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Text this: Articulatory characterisation of Singapore Mandarin tones using ultrasound