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

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Text this: Typology and formation of pothole along the Mekong river and erosional remnant in sandstone of Khorat group, Ubon Ratchathani province, northeastern Thailand