10 +------------------------------------------------------------------------------------------+   
     |         +         +        *+  *      +          +         +         +         +       **|   
     |                           *     *                                                     *  |   
     |                           *      **                                                  *   |   
     |                          *         *                                               **    |   
     |                         *           **                                            *      |   
     |                        *              *                                          *       |   
   9 |-+                     *                *                                       **      +-|   
     |                      *                  **                                    *        ##|   
     |                      *                    *                                  *        #  |   
     |                     *                      **                              **        #   |   
     |                    *                         *                            *        ##    |   
     |                   *                           **                        **        #      |   
     |                  *                              *                      *         #       |   
   8 |-+               *                                *                    *        ##      +-|   
     |                 *                                 **                **        #          |   
     |                *                                    *              *         #           |   
     |               *                                      **           *        ##            |   
     |              *                                         *        **        #              |   
     |             *                                           *      *        ##               |   
     |            *                                             **   *        #                 |   
     |            *                                                **        #                  |   
   7 |-+         *                                                A        ##                 +-|   
     |          *                                                         #                     |   
     |         *                                                         #                      |   
     |        *                                                        ##                       |   
     |       *                                                        #                         |   
     |       *                                                       #                          |   
     |      *                                                      ##                           |   
   6 |#############################B##############################B                           +-|   
     |    *                                                                                     |   
     |   *                                                                                      |   
     |  *                                                                                       |   
     |  *                                                                                       |   
     | *                                                                                        |   
     |*        +         +         +         +          +         +         +         +         |   
   5 +------------------------------------------------------------------------------------------+   
   01:00     01:10     01:20     01:30     01:40      01:50     02:00     02:10     02:20     02:30