prompt: Your task is to convert an English description into an ASCII tree format using this style:
  ```
  fixtures
   +--behavior
   |   +--get-with-falsy-receiver
   |   `--get-without-receiver
   +--dependencies
   |   +--basic
   |   +--deep
   |   +--missing
   |   +--multiple
   |   +--rename-binding-equal
   |   +--rename-deep-global
   |   +--reuse-dependency
   |   `--variable-same-name-dependency
   `--misc
       +--9496
  ```
  
  Convert this description:
  
  afero is a top-level directory that collects 2 subdirectories: internal and mem.
  In the root directory, 'internal' houses 1 directories: common.
  Within directory hierarchy 'internal → common', Inside 'common', you'll find it contains no subdirectories.
  At the top level, The 'mem' storage space has no content.
  
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "afero\n +--internal\n |   `--common\n `--mem", "description": "afero is a top-level directory that collects 2 subdirectories: internal and mem.\nIn the root directory, 'internal' houses 1 directories: common.\nWithin directory hierarchy 'internal \u2192 common', Inside 'common', you'll find it contains no subdirectories.\nAt the top level, The 'mem' storage space has no content.\n"}