A diagram of a tree with six nodes. The nodes are arranged in a grid-like pattern, with each node represented by a red circle. The first node on the top left is labeled "A", followed by "5", "B", "C", and "D". The second node is numbered "6", "5" and "7". The third node is labelled "5". The fourth node has a red arrow pointing to the fifth node, indicating that it is numbered 5. There are also six smaller nodes on the bottom left and right sides of the diagram. Each node has the letter "D" written on it, which is likely the letter of the alphabet.
User profphd uploaded the image
User profphd uploaded the image
