                                                             
  ^                                                            
  |                                                            
1 +                                =======================     
  |                                .                           
  |                                .                           
  |                                .                           
  |                     ===========.                           
  |                     .                                      
  |                     .                                      
  +---------------------+                                      
  |                     |                                      
  |                     |                                      
  |          ===========|                                      
  |          .          |                                      
  |          .          |                                      
  |          .          |                                      
  |          .          |                                      
  +==========.          |                                      
  |                     V                                      
  +----------+----------+----------+----------+----------+---->
  0          1          2          3          4          5     
                                                            
