<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">Let's build our tree:
\begin{haskellcode}
tree :: Tree
tree = Node
       (Leaf 'x')
       1
       (Node
            (Leaf 'y')
            2
            (Leaf 'z')
       )
\end{haskellcode}
See board...</pre></body></html>