$x=2y^2-2z^{2}z=-1$ using $x$ and $y.z=0$ using $x$ and $y.z=1$ using $x$ and $y.y=-1$ using $x$ and $z.y=0$ using $x$ and $z.y=1$ using $x$ and $z.x=-1$ using $y$ and $z.x=0$ using $y$ and $z.x=1$ using $y$ and $z.$