$\begin{pmatrix} 1 & 0 & 0 \\ 0 & -\dfrac{1}{\sqrt{2}} & -\dfrac{1}{\sqrt{2}} \\ 0 & \dfrac{1}{\sqrt{2}} & -\dfrac{1}{\sqrt{2}} \end{pmatrix}$

$\begin{pmatrix} 1 & -\dfrac{1}{\sqrt{2}} & -\dfrac{1}{\sqrt{2}} \\ 0 & 1 & 0 \\ 0 & \dfrac{1}{\sqrt{2}} & -\dfrac{1}{\sqrt{2}} \end{pmatrix}$

$\begin{pmatrix} 1 & -\dfrac{1}{\sqrt{2}} & -\dfrac{1}{\sqrt{2}} \\ 0 & \dfrac{1}{\sqrt{2}} & -\dfrac{1}{\sqrt{2}} \\ 0 & 0 & 1 \end{pmatrix}$

$\begin{pmatrix} 1 & 0 & 0 \\  -\dfrac{1}{\sqrt{2}} & 1 & -\dfrac{1}{\sqrt{2}} \\ \dfrac{1}{\sqrt{2}} & 0 & -\dfrac{1}{\sqrt{2}} \end{pmatrix}$

$\begin{pmatrix} 1 & 0 & 0 \\ 0 & -\dfrac{1}{2} & \dfrac{\sqrt{3}}{2} \\ 0 & -\dfrac{\sqrt{3}}{2} & -\dfrac{1}{2} \end{pmatrix}$

$\begin{pmatrix} 1 & 0 & 0 \\ 0 & -\dfrac{1}{2} & -\dfrac{\sqrt{3}}{2} \\ 0 & \dfrac{\sqrt{3}}{2} & -\dfrac{1}{2} \end{pmatrix}$

$\begin{pmatrix} 1 & 0 & 0 \\ 0 & \dfrac{1}{2} & \dfrac{\sqrt{3}}{2} \\ 0 & -\dfrac{\sqrt{3}}{2} & \dfrac{1}{2} \end{pmatrix}$

$\begin{pmatrix} 1 & 0 & 0 \\ 0 & \dfrac{1}{2} & -\dfrac{\sqrt{3}}{2} \\ 0 & \dfrac{\sqrt{3}}{2} & \dfrac{1}{2} \end{pmatrix}$

$\begin{pmatrix} \dfrac{1}{2} & 0 & -\dfrac{\sqrt{3}}{2} \\ 0 & 1 & 0 \\ \dfrac{\sqrt{3}}{2} & 0 & \dfrac{1}{2} \end{pmatrix}$

$\begin{pmatrix} \dfrac{1}{2} & 0 & \dfrac{\sqrt{3}}{2} \\ 0 & 1 & 0 \\ -\dfrac{\sqrt{3}}{2} & 0 & \dfrac{1}{2} \end{pmatrix}$

$\begin{pmatrix} -\dfrac{\sqrt{3}}{2} & 0 & \dfrac{1}{2} \\ 0 & 1 & 0 \\ \dfrac{1}{2} & 0 & \dfrac{\sqrt{3}}{2} \end{pmatrix}$

$\begin{pmatrix} \dfrac{\sqrt{3}}{2} & 0 & \dfrac{1}{2} \\ 0 & 1 & 0 \\ \dfrac{1}{2} & 0 & -\dfrac{\sqrt{3}}{2} \end{pmatrix}$

$\begin{pmatrix} 0 & 0 & 1 \\ 0 & 1 & 0 \\ -1 & 0 & 0 \end{pmatrix}$

$\begin{pmatrix} 0 & 0 & -1 \\ 0 & 1 & 0 \\ 1 & 0 & 0 \end{pmatrix}$

$\begin{pmatrix} 1 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & -1 \end{pmatrix}$

$\begin{pmatrix} -1 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & 1 \end{pmatrix}$

$\begin{pmatrix} \dfrac{1}{\sqrt{2}} & 0 & \dfrac{1}{\sqrt{2}} \\ 0 & 1 & 0 \\ -\dfrac{1}{\sqrt{2}} & 0 & \dfrac{1}{\sqrt{2}} \end{pmatrix}$

$\begin{pmatrix} \dfrac{1}{\sqrt{2}} & 0 & -\dfrac{1}{\sqrt{2}} \\ 0 & 1 & 0 \\ \dfrac{1}{\sqrt{2}} & 0 & \dfrac{1}{\sqrt{2}} \end{pmatrix}$

$\begin{pmatrix} -\dfrac{1}{\sqrt{2}} & 0 & \dfrac{1}{\sqrt{2}} \\ 0 & 1 & 0 \\ -\dfrac{1}{\sqrt{2}} & 0 & -\dfrac{1}{\sqrt{2}} \end{pmatrix}$

$\begin{pmatrix} -\dfrac{1}{\sqrt{2}} & 0 & -\dfrac{1}{\sqrt{2}} \\ 0 & 1 & 0 \\ \dfrac{1}{\sqrt{2}} & 0 & -\dfrac{1}{\sqrt{2}} \end{pmatrix}$

$\begin{pmatrix} \dfrac{1}{\sqrt{2}} & -\dfrac{1}{\sqrt{2}} & 0  \\ \dfrac{1}{\sqrt{2}} & \dfrac{1}{\sqrt{2}} & 0 \\ 0 & 0 & 1 \end{pmatrix}$

$\begin{pmatrix} \dfrac{1}{\sqrt{2}} & \dfrac{1}{\sqrt{2}} & 0  \\ -\dfrac{1}{\sqrt{2}} & \dfrac{1}{\sqrt{2}} & 0 \\ 0 & 0 & 1 \end{pmatrix}$

$\begin{pmatrix} 1 & 0 & 0 \\ 0 & \dfrac{1}{\sqrt{2}} & -\dfrac{1}{\sqrt{2}} \\ 0 & \dfrac{1}{\sqrt{2}} & \dfrac{1}{\sqrt{2}} \end{pmatrix}$

$\begin{pmatrix} 1 & 0 & 0 \\ 0 & \dfrac{1}{\sqrt{2}} & \dfrac{1}{\sqrt{2}} \\ 0 & -\dfrac{1}{\sqrt{2}} & \dfrac{1}{\sqrt{2}} \end{pmatrix}$

$\begin{pmatrix} -\dfrac{\sqrt{3}}{2} & -\dfrac{1}{2} & 0  \\ \dfrac{1}{2} & - \dfrac{\sqrt{3}}{2} & 0 \\ 0 & 0 & 1 \end{pmatrix}$

$\begin{pmatrix} -\dfrac{\sqrt{3}}{2} & \dfrac{1}{2} & 0  \\ -\dfrac{1}{2} & - \dfrac{\sqrt{3}}{2} & 0 \\ 0 & 0 & 1 \end{pmatrix}$

$\begin{pmatrix} \dfrac{\sqrt{3}}{2} & -\dfrac{1}{2} & 0  \\ \dfrac{1}{2} & \dfrac{\sqrt{3}}{2} & 0 \\ 0 & 0 & 1 \end{pmatrix}$

$\begin{pmatrix} \dfrac{\sqrt{3}}{2} & \dfrac{1}{2} & 0  \\ -\dfrac{1}{2} & \dfrac{\sqrt{3}}{2} & 0 \\ 0 & 0 & 1 \end{pmatrix}$

$\begin{pmatrix} \dfrac{1}{2} & \dfrac{\sqrt{3}}{2} & 0  \\ -\dfrac{\sqrt{3}}{2} & \dfrac{1}{2} & 0 \\ 0 & 0 & 1 \end{pmatrix}$

$\begin{pmatrix} \dfrac{1}{2} & -\dfrac{\sqrt{3}}{2} & 0  \\ \dfrac{\sqrt{3}}{2} & \dfrac{1}{2} & 0 \\ 0 & 0 & 1 \end{pmatrix}$

$\begin{pmatrix} \dfrac{\sqrt{3}}{2} & \dfrac{1}{2} & 0  \\ \dfrac{1}{2} & -\dfrac{\sqrt{3}}{2} & 0 \\ 0 & 0 & 1 \end{pmatrix}$

$\begin{pmatrix} -\dfrac{\sqrt{3}}{2} & \dfrac{1}{2} & 0  \\ \dfrac{1}{2} & \dfrac{\sqrt{3}}{2} & 0 \\ 0 & 0 & 1 \end{pmatrix}$