<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">{ \newcommand{\nodea}{\node[draw,circle] (a) {$1, 2$}
;}\begin{tikzpicture}[auto]
\matrix[column sep=.3cm, row sep=.3cm,ampersand replacement=\&amp;]{
 \nodea  \\
};
\end{tikzpicture}}
{  \newcommand{\nodea}{\node[draw,circle] (a) {$1, 2$}
;}\begin{tikzpicture}[auto]
\matrix[column sep=.3cm, row sep=.3cm,ampersand replacement=\&amp;]{
 \nodea  \\
};
\end{tikzpicture}}</pre></body></html>