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