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