子級與樹中父級的樣式相同

Question

我正在嘗試創建一棵樹，其中子節點與其父節點具有相同的外觀，但在添加子節點並嘗試使用相同的樣式時，我不斷收到未知錯誤：

\PassOptionsToPackage{x11names}{xcolor}
\documentclass{article}
\usepackage{tikz}

\begin{document}

\begin{tikzpicture}
[nonLeaf/.style n args={4}{minimum size=8mm, draw,  line width=3pt, draw=MediumPurple3, fill=yellow, text=Blue4, rectangle, label={[align=left, xshift=-5pt]left:{$\alpha:#1$\\$\beta:#2$}}, label={[align=left]right:{$\alpha:#3$\\$\beta:#4$}}},
every child node/.style={nonLeaf}]

\node[nonLeaf={1}{2}{3}{4}]{19};
    %child{node[nonleaf={5}{6}{7}{8}]{25}} <----- problem

\end{tikzpicture}
\end{document}