Let \(W\) be the subspace spanned by the vectors \[ \begin{bmatrix} -4 \\ -1 \\ -25 \\ 6 \end{bmatrix}, \qquad \begin{bmatrix} 1 \\ 4 \\ 25 \\ -9 \end{bmatrix}.\] Find a basis for the orthogonal complement \(W^\perp\) of \(W\).

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