[−2−220−30−4108218]\left[\begin{array}{rrr}-2 & -22 & 0 \\-30 & -4 & 10 \\8 & 2 & 18\end{array}\right]−2−308−22−4201018
[−20−22−30−1048182]\left[\begin{array}{rrr}-2 & 0 & -22 \\-30 & -10 & 4 \\8 & 18 & 2\end{array}\right]−2−3080−1018−2242
[−2−220−304−108218]\left[\begin{array}{rrr}-2 & -22 & 0 \\-30 & 4 & -10 \\8 & 2 & 18\end{array}\right]−2−308−22420−1018
[−20−223010−48182]\left[\begin{array}{rrr}-2 & 0 & -22 \\30 & 10 & -4 \\8 & 18 & 2\end{array}\right]−230801018−22−42