+---------------------------------------------------------------------------------------------------------+
|                                           Neighborhood Above                                            |
|                     +-----------------+-----------------------+-------------------------+               |
|                     |                 |                       |                         |               |
|                     |                 v                       v                         v               |
|      +--------------+-+       +----------------+       +----------------+       +----------------+      |
|      |                |       |                |       |                |       |                |      |
|      |   Neighbor 1   |       |   Neighbor 2   |       |   Neighbor 3   |       |   Neighbor 4   |      |
|      |     Anchor     |       |                |       |                |       |                |      |
|      +--+-------------+       +---+------------+       +------+---------+       +---+------------+      |
|         |                         |                           |                     |                   |
+---------|-------------------------|---------------------------|---------------------|-------------------+
          |                         |                           |                     |
          |                         |                           |                     |
          |                         |                           |                     |
          |                         |                           |                     |
+---------|-------------------------|---------------------------|---------------------|-------------------+
|         |                         |       Neighborhood Below  |                     |                   |
|         v                         v                           v                     v                   |
|      +--+-------------+       +---+------------+       +------+---------+       +---+------------+      |
|      |                |       |                |       |                |       |                |      |
|      |   Neighbor 1   |       |   Neighbor 2   |       |   Neighbor 3   |       |   Neighbor 4   |      |
|      |     Anchor     |       |                |       |                |       |                |      |
|      +--------------+-+       +----------------+       +----------------+       +----------------+      |
|                     |                 ^                       ^                         ^               |
|                     |                 |                       |                         |               |
|                     +-----------------+-----------------------+-------------------------+               |
+---------------------------------------------------------------------------------------------------------+