Diagram 1: Root, Branch and Leaf Nodes

                               Root
                                |
                  ----------------------------------------------------
                  |                            |            |        |
               Branch                       Branch       Branch     Leaf
                  |                            |            |
       -------------------------         ------------       |
       |                       |         |          |       |
    Branch                  Branch     Leaf       Leaf   Branch
       |                       |                            |
       |                 ------------                       |
       |                 |          |                       |
     Leaf              Leaf       Leaf                    Leaf