prompt: Your task is to convert an English description into an ASCII tree format using this style:
  ```
  generated
   +--groovy
   |   +--app
   |   |   `--src
   |   |       +--main
   |   |       |   `--java
   |   |       |       `--org
   |   |       |           `--example
   |   |       `--test
   |   |           `--java
   |   |               `--org
   |   |                   `--example
   |   `--gradle
   `--kotlin
  ```
  
  Convert this description:
  
  api is a source directory that incorporates 2 subdirectories: alembic and app.
  In the root directory, 'alembic' includes 1 directory entries: versions.
  In nested path 'alembic > versions', Inside 'versions', you'll find it has nothing inside.
  Back to the top level.
  In the root directory, Within 'app', you'll find 2 nested folders for code structure.
  At level 2, in directory path 'app / routers', The 'routers' section appears to be unused.
  Within directory hierarchy 'app > utils', 'utils' hasn't been filled with any content.
  
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "api\n +--alembic\n |   `--versions\n `--app\n     +--routers\n     `--utils", "description": "api is a source directory that incorporates 2 subdirectories: alembic and app.\nIn the root directory, 'alembic' includes 1 directory entries: versions.\nIn nested path 'alembic > versions', Inside 'versions', you'll find it has nothing inside.\nBack to the top level.\nIn the root directory, Within 'app', you'll find 2 nested folders for code structure.\nAt level 2, in directory path 'app / routers', The 'routers' section appears to be unused.\nWithin directory hierarchy 'app > utils', 'utils' hasn't been filled with any content.\n"}