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

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Text this: Frequent pattern space maintenance : theories and algorithms