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

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Text this: Motion of a bubble ring in a viscous fluid