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