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

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

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

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

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

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

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

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

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

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

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

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

$\left\{ $$\begin{aligned}x&= t \\ y &= 0 \end{aligned}$$ \right.$

$\left\{ $$\begin{aligned}x&= 0 \\ y &= t \end{aligned}$$ \right.$

$\left\{ $$\begin{aligned}x&= t \\ y &= t \end{aligned}$$ \right.$

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

$\left\{ $$\begin{aligned}x&= 0 \\ y &= t \end{aligned}$$ \right.$

$\left\{ $$\begin{aligned}x&= t \\ y &= 0 \end{aligned}$$ \right.$

$\left\{ $$\begin{aligned}x&= t \\ y &= t \end{aligned}$$ \right.$

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