\section*{Test result}
\begin{itemize}
\item[~~] ABC xyz
\item[ap] ABC xyz.
\item[~~] ABC xyz.
\item[ap] ABC xyz.
\item[~~] ABC xyz!
\item[ap] ABC xyz!
\item[~~] ABC xyz?
\item[ap] ABC xyz?
\item[~~] ABC xyz,
\item[ap] ABC xyz,.
\item[~~] ABC {xyz!}
\item[ap] ABC {xyz!}
\item[~~] ABC {{xyz?}}
\item[ap] ABC {{xyz?}}
\end{itemize}
\endinput