Solve the system $$\left\lbrace \begin{array}{r@{}r@{}r@{}r} x & + y & = & -4 \\ 2 x & - 2 y & = & -16 \\ 8 x & - 4 y & = & -56 \end{array}\right.$$ If there is no solution, enter NONE in both answer blanks.
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