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

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Text this: Green's relations on semigroups of regressive transformations with restricted range