+--------------------------------------------------------+     |    +--------------------------------------------------------+
|                                                        |          |                                                        |
+---------+-------+--------------------------------------+          +---------+-------+--------------------------------------+
|    :    | Start | For:                                 |          |    :    | Start | For:                                 |
+---------+-------+--------------------------------------+          +---------+-------+--------------------------------------+
|    :    |  End  |                                      |          |    :    |  End  |                                      |
+---------+-------+--------------------------------------+          +---------+-------+--------------------------------------+
          
+---------+-------+--------------------------------------+          +---------+-------+--------------------------------------+
|    :    | Start | For:                                 |          |    :    | Start | For:                                 |
+---------+-------+--------------------------------------+          +---------+-------+--------------------------------------+
|    :    |  End  |                                      |          |    :    |  End  |                                      |
+---------+-------+--------------------------------------+          +---------+-------+--------------------------------------+
          
+---------+-------+--------------------------------------+          +---------+-------+--------------------------------------+
|    :    | Start | For:                                 |          |    :    | Start | For:                                 |
+---------+-------+--------------------------------------+          +---------+-------+--------------------------------------+
|    :    |  End  |                                      |          |    :    |  End  |                                      |
+---------+-------+--------------------------------------+          +---------+-------+--------------------------------------+
          
+---------+-------+--------------------------------------+     |    +---------+-------+--------------------------------------+
|    :    | Start | For:                                 |          |    :    | Start | For:                                 |
+---------+-------+--------------------------------------+          +---------+-------+--------------------------------------+
|    :    |  End  |                                      |          |    :    |  End  |                                      |
+---------+-------+--------------------------------------+          +---------+-------+--------------------------------------+
          
+---------+-------+--------------------------------------+          +---------+-------+--------------------------------------+
|    :    | Start | For:                                 |          |    :    | Start | For:                                 |
+---------+-------+--------------------------------------+          +---------+-------+--------------------------------------+
|    :    |  End  |                                      |          |    :    |  End  |                                      |
+---------+-------+--------------------------------------+          +---------+-------+--------------------------------------+
          
+---------+-------+--------------------------------------+          +---------+-------+--------------------------------------+
|    :    | Start | For:                                 |          |    :    | Start | For:                                 |
+---------+-------+--------------------------------------+          +---------+-------+--------------------------------------+
|    :    |  End  |                                      |          |    :    |  End  |                                      |
+---------+-------+--------------------------------------+          +---------+-------+--------------------------------------+
          
+---------+-------+--------------------------------------+          +---------+-------+--------------------------------------+
|    :    | Start | For:                                 |          |    :    | Start | For:                                 |
+---------+-------+--------------------------------------+          +---------+-------+--------------------------------------+
|    :    |  End  |                                      |          |    :    |  End  |                                      |
+---------+-------+--------------------------------------+     |    +---------+-------+--------------------------------------+
          
_                                                        _          _                                                        _