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4 cos2x 4 cos 2x

4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x
4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x
4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x4 cos2x 4 cos 2x