+-+---------------------+-----------+-------------+---------+-----------------+
| |                     |           |             |         |                 |
| | +-------------+---- | +-------+ | +---------+ | +---+ | | --+-+-------+ | |
| | |             |     | |       | | |         |   |   | | |   | |       | | |
| | +-+ ------+-- | --+ | | +---- | | | | ------+---+ | | +-+-- | | --+-- +-+ |
| |   |       |   |   | | | |     | | | |           | | | |     | |   |   |   |
| +-+ +---+-- | +-+-+ +-+ | | +---+ | | +-------+ | +-+ | | +---+ +-+ +-+ | | |
| | |     |   | |   |     | | |     | | |       | |   | |   |       |   |   | |
| | +---+ +---+ | | +-----+ | | --+ | | +---+-- | +-- | +---+-- +-- +-+ | +-+-+
| |     |     |   |         | |   | | | |   |   | |             |     | | |   |
  | | +-+---- | --+---+-----+ +-+ +-+ | | | | +-+ +-------------+-----+ +-+ |  
| | | |       |       |     |   |   | |   |   |   |                     |   | |
| | | | +-----+-----+ +---+ +-- +-+ | | +-+---+ --+ +-----+-----------+ | --+ |
| | | | |           |     | |     |   | |     |   | |     |           | |   | |
| +-+ | | +-------+ +---+ | | ----+---+-+ +-- +-- | | +-+ | +---+-+-- +-+ +-+ |
|   |     |       | |   |   |             |   |   |   | | | |   | |   |   |   |
+-+ +-+---+ +---+ | | | +---+------ +-----+ --+ | +---+ | | | | | | --+ --+ --+
| |   |     |   | |   |             |           |       |     |   |       |   |
| +-- | +---+ | | +---+-------------+-----------+-------+-----+---+-------+-- |
|       |     |                                                               |
+-------+-----+---------------------------------------------------------------+