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