.
                |
                |
    __________  |   _________       _______      _________
    \         |____\\        |_____\\      |_____\        |________    __
----\\        |      \__     |_      \__   . _   \\_      |       /_-\(_/-
 __   \_      |      _ /     |/      _ /    //   _ /      |      _ /
-\_)/- /______|      \//_______      \/_____     \/_______|      \//------
              |______//       //_____//   //_____//       |______// ab+pO
                .                                                  impure!
                |
      _   __   _|_   ___    __   _
     (_\ \\_\  \_/  /__//  /_// /_) / .  x  .  b o x .  ::::::::::::::::::
                |
                |
                .