+------------------+
|      |           |
|--- + |  ------+ $|
|    |         3|  |
| +  +------+   |  |
| |         |   |  |
| +---+     +---+  |
|     |            |
|--+  +------------|
| 1   |            |
|--+  |   +        |
|  |  +   |   +----|
|  |      |        |
|  +------+---+    |
|             |    |
|      +--+   +    |
|      |  $   $    |
|  +---|  +--------|
|     2|          S|
+------------------+