## Map

```
+--------+--------+--------+
|        |        |        |
|        |        |        |
++---+  ++----+  ++----+  ++
 |   |                    |
 |   |                    |
 |   +---+   +----+-------++
 |   +            +        |
 |                         |
 |   +            +        |
++  ++            |        |
|    |            |        |
|    +------------+        |
+----+            +--------+
```