prompt: Your task is to convert the following English description into an ASCII tree format.
  
  packages is a primary directory that collects 2 subdirectories: lib and www.
  In the root directory, 'lib' has 2 subdirectories that organize the source code.
  At level 2, in directory path 'lib → a', The 'a' repository appears to be unused.
  Within directory hierarchy 'lib > b', 'b' is a vacant space.
  Back to the top level.
  At the top level, 'www' encompasses 3 child directories: components, pages, test.
  In nested path 'www / components', Inside 'components', you'll find it hasn't been filled with any content.
  At level 2, in directory path 'www / pages', The 'pages' container is empty.
  In nested path 'www > test', 'test' is vacant.
  
  
  Format your response in this style:
  ```
  [lang]
   +--@modal
   |   +--(.)feed
   |   `--(.)photos
   |       `--[id]
   +--feed
   `--photos
       `--[id]
  ```
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "packages\n +--lib\n |   +--a\n |   `--b\n `--www\n     +--components\n     +--pages\n     `--test", "description": "packages is a primary directory that collects 2 subdirectories: lib and www.\nIn the root directory, 'lib' has 2 subdirectories that organize the source code.\nAt level 2, in directory path 'lib \u2192 a', The 'a' repository appears to be unused.\nWithin directory hierarchy 'lib > b', 'b' is a vacant space.\nBack to the top level.\nAt the top level, 'www' encompasses 3 child directories: components, pages, test.\nIn nested path 'www / components', Inside 'components', you'll find it hasn't been filled with any content.\nAt level 2, in directory path 'www / pages', The 'pages' container is empty.\nIn nested path 'www > test', 'test' is vacant.\n"}