+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
      |     |           |        |        |  |
+--+  +--+  +  +--+--+  +  +  +  +--+  +  +  +
|     |     |  |     |  |  |  |        |  |  |
+  +--+  +  +  +  +--+  +  +--+--+--+--+  +  +
|        |     |     |  |     |     |     |  |
+--+--+--+  +--+--+  +  +--+  +  +  +  +--+  +
|  |     |           |     |  |  |     |     |
+  +  +  +  +--+  +--+--+  +  +  +--+--+  +--+
|  |  |     |  |  |        |  |        |     |
+  +  +--+--+  +  +  +--+--+  +--+--+  +--+  +
|  |     |        |     |     |     |        |
+  +--+  +--+--+--+--+  +  +  +  +  +--+--+  +
|        |           |     |     |        |  |
+  +  +--+  +--+--+--+--+--+--+--+--+  +  +  +
|  |     |              |        |     |  |  |
+--+--+  +--+--+--+--+  +  +--+--+  +--+  +  +
|     |  |           |  |           |  |  |  |
+  +  +  +--+  +  +--+  +--+--+--+--+  +  +--+
|  |  |  |     |     |              |  |     |
+  +  +  +  +--+--+  +--+--+--+--+  +  +  +  +
|  |  |  |  |        |     |        |     |  |
+  +  +  +  +  +--+--+  +  +  +--+--+--+--+  +
|  |  |  |  |     |     |  |        |        |
+  +  +  +--+--+  +  +--+--+--+--+  +  +--+--+
|  |     |     |  |           |        |     |
+--+  +--+  +  +  +--+--+  +  +--+  +--+--+  +
|     |     |        |     |     |  |     |  |
+  +--+  +--+--+--+--+  +--+--+  +  +  +  +  +
|        |                    |        |      
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
Solution[X]