## Map

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