   |
|               \    *     *     *     *    /               |
|                \ Balmy            Boding /                |
|                 \ B_1 o~~~~~&gt;~~~~~o B_2 /                 |
|                  \     *         *     /                  |
|                   \                   /                   |
|                    \    *       *    /                    |
|                     \               /                     |
|                      \   *     *   /                      |
|       