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           _    _    _    _    __   __    _____   
    ___   | || | || | |  | ||  \ \\/ //  / ____|| 
   /   || | || | || | |/\| ||   \ ` //  / //---`' 
  | [] || | \\_/ || |  /\  ||    | ||   \ \\___   
   \__ ||  \____//  |_// \_||    |_||    \_____|| 
    -|_||   `---`   `-`   `-`    `-`'     `----`  
     `-`

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Text this: Insights into the origins of guided microtrenches and microholes/rings from Sn segregation in germanium–tin epilayers