+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
|       |   |           |   |   |   |   |   |   |   |   |   |   |           |   |
+---+   +   +---+---+   +   +   +   +   +   +   +   +   +   +   +---+---+   +   +
|       |       |   |           |   |   |   |       |   |   |       |       |   |
+---+   +---+   +   +---+---+   +   +   +   +---+   +   +   +---+   +---+   +   +
|       |       |           |               |       |   |   |           |   |   |
+---+   +---+   +---+---+   +---+---+---+   +---+   +   +   +---+---+   +   +   +
|   |   |                   |       |       |       |       |   |   |           |
+   +   +---+---+---+---+   +---+   +---+   +---+   +---+   +   +   +---+---+   +
|                       |   |   |   |   |       |   |   |   |           |       |
+---+---+---+---+---+   +   +   +   +   +---+   +   +   +   +---+---+   +---+   +
|       |           |   |   |               |   |           |               |   |
+---+   +---+---+   +   +   +---+---+---+   +   +---+---+   +---+---+---+   +   +
|   |   |               |   |       |           |           |   |   |       |   |
+   +   +---+---+---+   +   +---+   +---+---+   +---+---+   +   +   +---+   +   +
|   |       |   |               |               |       |   |   |   |   |   |   |
+   +---+   +   +---+---+---+   +---+---+---+   +---+   +   +   +   +   +   +   +
|   |       |   |                   |       |       |           |               |
+   +---+   +   +---+---+---+---+   +---+   +---+   +---+---+   +---+---+---+   +
|       |       |       |   |   |                           |       |       |   |
+---+   +---+   +---+   +   +   +---+---+---+---+---+---+   +---+   +---+   +   +
|           |       |   |           |       |   |   |           |   |   |       |
+---+---+   +---+   +   +---+---+   +---+   +   +   +---+---+   +   +   +---+   +
|               |   |       |   |       |       |       |   |   |       |   |   |
+---+---+---+   +   +---+   +   +---+   +---+   +---+   +   +   +---+   +   +   +
|                                                   |   |       |               |
+---+---+---+---+---+---+---+---+---+---+---+---+   +   +---+   +---+---+---+   +
|       |           |       |           |       |       |       |               |
+---+   +---+---+   +---+   +---+---+   +---+   +---+   +---+   +---+---+---+   +
|   |   |       |           |           |       |               |   |           |
+   +   +---+   +---+---+   +---+---+   +---+   +---+---+---+   +   +---+---+   +
|   |   |                       |   |   |       |               |   |   |   |   |
+   +   +---+---+---+---+---+   +   +   +---+   +---+---+---+   +   +   +   +   +
|   |   |       |                                       |       |       |       |
+   +   +---+   +---+---+---+---+---+---+---+---+---+   +---+   +---+   +---+   +
|       |               |       |   |   |   |   |       |           |   |   |   |
+---+   +---+---+---+   +---+   +   +   +   +   +---+   +---+---+   +   +   +   +
|   |   |   |                   |       |   |   |   |   |   |   |       |       |
+   +   +   +---+---+---+---+   +---+   +   +   +   +   +   +   +---+   +---+   +
|                                                                               |
+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+