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Ctg 2x cos 2x

Ctg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2xCtg 2x cos 2x