Starting from the point $\left( -3, 1, -3 \right)$, reparametrize the curve
$\mathbf{r} (t) = ( -3 + 2 t, 1 + 3 t, -3 - 2 t )$ in terms of arclength.

$\mathbf{r}(t(s)) = ($ , , $)$