Let \(W\) be the subspace spanned by the vectors \[ \begin{bmatrix} -2 \\ 0 \\ -4 \\ -1 \end{bmatrix}, \qquad \begin{bmatrix} 2 \\ 0 \\ 4 \\ -4 \end{bmatrix}.\] Find a basis for the orthogonal complement \(W^\perp\) of \(W\).

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