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