56-45=, 11, 12, 20, 87-65=, 32, 22, 12, 84-21=, 45, 35, 63, 87-50=, 37, 73, 65, 89-78=, 11, 31, 52, 90-20=, 60, 70, 50, 94-51=, 34, 44, 43

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