$E_{1}:\;\dfrac{1}{\sqrt{14}}\begin{pmatrix}1\\-2\\3\end{pmatrix}\circ\left[\begin{pmatrix}x_1\\x_2\\x_3\end{pmatrix}-\begin{pmatrix}1\\2\\3\end{pmatrix}\right]=0$

$E_{2}:\;\dfrac{1}{\sqrt{14}}\begin{pmatrix}1\\3\\2\end{pmatrix}\circ\left[\begin{pmatrix}x_1\\x_2\\x_3\end{pmatrix}-\begin{pmatrix}4\\5\\6\end{pmatrix}\right]=0$

$E_{3}:\;\dfrac{1}{\sqrt{101}}\begin{pmatrix}6\\7\\4\end{pmatrix}\circ\left[\begin{pmatrix}x_1\\x_2\\x_3\end{pmatrix}-\begin{pmatrix}4\\5\\6\end{pmatrix}\right]=0$

$E_{4}:\;\dfrac{1}{\sqrt{14}}\begin{pmatrix}1\\3\\2\end{pmatrix}\circ\left[\begin{pmatrix}x_1\\x_2\\x_3\end{pmatrix}-\begin{pmatrix}1\\0\\2\end{pmatrix}\right]=0$

$E_{1}:\;\frac{1}{\sqrt{14}}\begin{pmatrix}1\\-2\\3\end{pmatrix}\circ\left[\begin{pmatrix}x_1\\x_2\\x_3\end{pmatrix}-\begin{pmatrix}1\\2\\3\end{pmatrix}\right]=0$

$E_{2}:\;\frac{1}{\sqrt{14}}\begin{pmatrix}-1\\2\\3\end{pmatrix}\circ\left[\begin{pmatrix}x_1\\x_2\\x_3\end{pmatrix}-\begin{pmatrix}1\\2\\3\end{pmatrix}\right]=0$

$E_{3}:\;\frac{1}{\sqrt{14}}\begin{pmatrix}1\\2\\-3\end{pmatrix}\circ\left[\begin{pmatrix}x_1\\x_2\\x_3\end{pmatrix}-\begin{pmatrix}1\\2\\3\end{pmatrix}\right]=0$

$E_{4}:\;\frac{1}{\sqrt{14}}\begin{pmatrix}1\\2\\3\end{pmatrix}\circ\left[\begin{pmatrix}x_1\\x_2\\x_3\end{pmatrix}-\begin{pmatrix}1\\2\\3\end{pmatrix}\right]=0$

$E_{1}:\;\frac{1}{\sqrt{14}}\begin{pmatrix}1\\-2\\3\end{pmatrix}\circ\left[\begin{pmatrix}x_1\\x_2\\x_3\end{pmatrix}-\begin{pmatrix}1\\2\\3\end{pmatrix}\right]=0$

$E_{2}:\;\frac{1}{\sqrt{14}}\begin{pmatrix}-1\\2\\3\end{pmatrix}\circ\left[\begin{pmatrix}x_1\\x_2\\x_3\end{pmatrix}-\begin{pmatrix}4\\5\\6\end{pmatrix}\right]=0$

$E_{3}:\;\frac{1}{\sqrt{6}}\begin{pmatrix}0\\0\\6\end{pmatrix}\circ\left[\begin{pmatrix}x_1\\x_2\\x_3\end{pmatrix}-\begin{pmatrix}7\\8\\9\end{pmatrix}\right]=0$

$E_{4}:\;\frac{1}{\sqrt{14}}\begin{pmatrix}1\\2\\3\end{pmatrix}\circ\left[\begin{pmatrix}x_1\\x_2\\x_3\end{pmatrix}-\begin{pmatrix}1\\1\\1\end{pmatrix}\right]=0$

$E_{1}:\;\frac{1}{\sqrt{14}}\begin{pmatrix}1\\-2\\3\end{pmatrix}\circ\left[\begin{pmatrix}x_1\\x_2\\x_3\end{pmatrix}-\begin{pmatrix}1\\2\\3\end{pmatrix}\right]=0$

$E_{2}:\;\frac{1}{\sqrt{14}}\begin{pmatrix}-1\\2\\3\end{pmatrix}\circ\left[\begin{pmatrix}x_1\\x_2\\x_3\end{pmatrix}-\begin{pmatrix}4\\5\\6\end{pmatrix}\right]=0$

$E_{3}:\;\frac{1}{\sqrt{14}}\begin{pmatrix}1\\2\\-3\end{pmatrix}\circ\left[\begin{pmatrix}x_1\\x_2\\x_3\end{pmatrix}-\begin{pmatrix}7\\8\\9\end{pmatrix}\right]=0$

$E_{4}:\;\frac{1}{\sqrt{14}}\begin{pmatrix}1\\2\\3\end{pmatrix}\circ\left[\begin{pmatrix}x_1\\x_2\\x_3\end{pmatrix}-\begin{pmatrix}0\\0\\0\end{pmatrix}\right]=0$