[−1−43−4]\left[\begin{array}{cc}-1 & -4 \\3 & -4\end{array}\right][−13−4−4]
[−1133]\left[\begin{array}{cc}-1 & 1 \\3 & 3\end{array}\right][−1313]
[6226]\left[\begin{array}{ll}6 & 2 \\2 & 6\end{array}\right][6226]
[3113]\left[\begin{array}{ll}3 & 1 \\1 & 3\end{array}\right][3113]