$\dfrac{1}{\sqrt{10}}\begin{pmatrix} 1 & 3 \\ -3 & 1 \end{pmatrix}$

$\dfrac{1}{\sqrt{10}}\begin{pmatrix} 3 & 1 \\ 1 & -3 \end{pmatrix}$

$\begin{pmatrix} 1 & 3 \\ -3 & 1 \end{pmatrix}$

$\begin{pmatrix} 3 & 1 \\ 1 & -3 \end{pmatrix}$

$\dfrac{1}{\sqrt{2}}\begin{pmatrix} 1 & 1 \\ -1 & 1 \end{pmatrix}$

$\dfrac{1}{\sqrt{2}}\begin{pmatrix} 1 & 1 \\ 1 & -1 \end{pmatrix}$

$\dfrac{1}{\sqrt{2}}\begin{pmatrix} -1 & 1 \\ 1 & -1 \end{pmatrix}$

$\dfrac{1}{\sqrt{2}}\begin{pmatrix} 1 & -1 \\ -1 & 1 \end{pmatrix}$

$ \dfrac{1}{\sqrt{2}}\begin{pmatrix} 1 & 1 \\ 1 & -1 \end{pmatrix}$

$ \dfrac{1}{\sqrt{2}}\begin{pmatrix} 1 & 1 \\ -1 & 1 \end{pmatrix}$

$ \dfrac{1}{\sqrt{2}}\begin{pmatrix} -1 & 1 \\ 1 & 1 \end{pmatrix}$

$ \dfrac{1}{\sqrt{2}}\begin{pmatrix} 1 & 1 \\ 1 & 1 \end{pmatrix}$