688 hertz a hertz

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687.5 hertz a hertz 687.6 hertz a hertz 687.7 hertz a hertz 687.8 hertz a hertz 687.9 hertz a hertz 688 hertz a hertz 688.1 hertz a hertz 688.2 hertz a hertz 688.3 hertz a hertz 688.4 hertz a hertz

398.3 hertz a hertz 158.4 hertz a hertz 637.1 hertz a hertz 793.4 hertz a hertz 570.2 hertz a hertz 840.1 hertz a hertz 795 hertz a hertz 758.9 hertz a hertz 627.7 hertz a hertz 415.1 hertz a hertz

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