\begin{table}[H]
\begin{center}
\caption{表題}
\label{all0}
\begin{tabular}{|r|c|c|c|c|}
\hline
\backslashbox{{\scriptsize 行}}{{\scriptsize 列}}&A&B&C&D \\ \hline
1&1A&1B&1C&1D \\ \hline
2&2A&2B&2C&2D \\ \hline
3&3C&3B&3C&3D \\ \hline
4&4C&4B&4C&4D \\ \hline
\end{tabular}
\end{center}
\end{table}