[−3241]\left[\begin{array}{cc}-3 & 2 \\4 & 1\end{array}\right][−3421]
[−3421]\left[\begin{array}{cc}-3 & 4 \\2 & 1\end{array}\right][−3241]
[142−3]\left[\begin{array}{cc}1 & 4 \\2 & -3\end{array}\right][124−3]
[−3−4−21]\left[\begin{array}{cc}-3 & -4 \\-2 & 1\end{array}\right][−3−2−41]