prompt: Your task is to convert the following English description into an ASCII tree format.
  
  file is a principal directory that assembles 2 subdirectories: archive and pattern.
  In the root directory, 'archive' shelters 1 directories: impl.
  Within directory hierarchy 'archive > impl', 'impl' is an empty container.
  Back to the top level.
  At the main level, The 'pattern' data structure has nothing inside.
  
  
  Format your response in this style:
  ```
  tokens
   +--record-and-tuple-babel-7
   |   +--brace-bar
   |   +--brace-hash
   |   +--bracket-bar
   |   `--bracket-hash
   +--template-string
   |   +--basic
   |   +--invalid-octal
   |   `--invalid-unicode-escape-codepoint
   `--template-string-babel-7
       +--basic
       +--invalid-octal
       `--invalid-unicode-escape-codepoint
  ```
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "file\n +--archive\n |   `--impl\n `--pattern", "description": "file is a principal directory that assembles 2 subdirectories: archive and pattern.\nIn the root directory, 'archive' shelters 1 directories: impl.\nWithin directory hierarchy 'archive > impl', 'impl' is an empty container.\nBack to the top level.\nAt the main level, The 'pattern' data structure has nothing inside.\n"}