\left\{\begin{array}{l}sqrt{x+19} - sqrt{y-6} =(m-2008)y+1\\\sqrt{y+19} - sqrt{x-6} =(m-2008)x+1\end{array}\right.$\left\{\begin{array}{l}sqrt{x+19} - sqrt{y-6} =(m-2008)y+1\\\sqrt{y+19} - sqrt{x-6} =(m-2008)x+1\end{array}\right.$
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