Even Group: 12, 8, 78, 40, 92, , , , even number + even number, odd number + odd number, 15 + 3 =, 8 + 8 =, 20 + 62 =, Odd Group: 9, 11, 39, 91, 23, , , , even number + odd number, 7 + 2 =, 10 + 11 =, 5 + 4 =, 79 + 6 =,

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