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