$\left\{ \begin{aligned} x &= -30 - 7t \\ y &= 50 + 13t \\ z &= t \end{aligned} \right.$

$\left\{ \begin{aligned} x &= 30 + 7t \\ y &= -50 - 13t \\ z &= t \end{aligned} \right.$

$\left\{ \begin{aligned} x &= 30 + 7t \\ y &= 50 + 13t \\ z &= t \end{aligned} \right.$

$\left\{ \begin{aligned} x &= -30 - 7t \\ y &= -50 - 13t \\ z &= t \end{aligned} \right.$

$\left\{ \begin{aligned} x &= 3 - 21t \\ y &= 5 -29t \\ z &= 15t \end{aligned} \right.$

$\left\{ \begin{aligned} x &= 3 - 7t \\ y &= 5 -23t \\ z &= 15t \end{aligned} \right.$

$\left\{ \begin{aligned} x &= 3 - 7t \\ y &= 5 -29t \\ z &= 15t \end{aligned} \right.$

$\left\{ \begin{aligned} x &= 3 - 21t \\ y &= 5 -23t \\ z &= 15t \end{aligned} \right.$

$\left\{ \begin{aligned} x &= -11t \\ y &= 1 + 16t \\ z &= 14t \end{aligned} \right.$

$\left\{ \begin{aligned} x &= -11t \\ y &= 1 + 8t \\ z &= 14t \end{aligned} \right.$

$\left\{ \begin{aligned} x &= 11t \\ y &= 1 + 16t \\ z &= 14t \end{aligned} \right.$

$\left\{ \begin{aligned} x &= 11t \\ y &= 1 + 8t \\ z &= 14t \end{aligned} \right.$

$\left\{ \begin{aligned} x &= 1-t \\ y &= 3t \\ z &= 2t \end{aligned} \right.$

$\left\{ \begin{aligned} x &= 2-t \\ y &= 3t \\ z &= 2t \end{aligned} \right.$

$\left\{ \begin{aligned} x &= 1+t \\ y &= 2t \\ z &= 3t \end{aligned} \right.$

$\left\{ \begin{aligned} x &= 2+t \\ y &= 2t \\ z &= 3t \end{aligned} \right.$