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16 - 67 is -2942.
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Related: 2/6-6/7 1/6-12/7 1/12-6/7 1/6-6/14 3/6-6/7 1/6-18/7 1/18-6/7 1/6-6/21 5/6-6/7 1/6-30/7 1/30-6/7 1/6-6/35 7/6-6/7 1/6-42/7 1/42-6/7 1/6-6/49
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