$$
\left[\begin{array}{cc|cc}
1 & 1 \hspace{0.10in} & \hspace{-0.10in} 1 & 1 \\
1 & 1 \hspace{0.10in} & \hspace{-0.10in} 1 & 1 \\
	\vspace{-0.10in} \\
	\hline
	\vspace{-0.25in} \\
1 & 1 \hspace{0.10in} & \hspace{-0.10in} 1 & 1 \\
1 & 1 \hspace{0.10in} & \hspace{-0.10in} 1 & 1 \\
\end{array}\right]
$$