pandoc-3.2.1: test/command/6033.md

```
% pandoc -t beamer --slide-level=4
# One

## One-A

:::: columns

::: column

- One column.

:::

::: column

- Another column.

:::

::::

- Some more text.

## One-B

- Text.

# Two

## Two-A

- More text.
^D
\section{One}\label{one}

\subsection{One-A}\label{one-a}

\begin{frame}{One-A}
\begin{columns}[T]
\begin{column}{0.48\linewidth}
\begin{itemize}
\tightlist
\item
  One column.
\end{itemize}
\end{column}

\begin{column}{0.48\linewidth}
\begin{itemize}
\tightlist
\item
  Another column.
\end{itemize}
\end{column}
\end{columns}

\begin{itemize}
\tightlist
\item
  Some more text.
\end{itemize}
\end{frame}

\subsection{One-B}\label{one-b}

\begin{frame}{One-B}
\begin{itemize}
\tightlist
\item
  Text.
\end{itemize}
\end{frame}

\section{Two}\label{two}

\subsection{Two-A}\label{two-a}

\begin{frame}{Two-A}
\begin{itemize}
\tightlist
\item
  More text.
\end{itemize}
\end{frame}
```