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$\left\{\begin{matrix}4x-y^{2}=1 & \\ 4y-z^{2}=1 & \\ 4z-x^{2}=1 & \end{matrix}\right.$
$\left\{\begin{matrix}4x-y^{2}=1 & \\ 4y-z^{2}=1 & \\ 4z-x^{2}=1 & \end{matrix}\right.$
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