6+8=?, 13, 14, 15, 16, 6+7 =?, 13, 14, 15, 16, 3+8=?, 10, 11, 12, 13, 4+9=?, 13, 14, 15, 16, 9+9=?, 17, 18, 19, 20, 8+8=?, 14, 15, 16, 17, 5+5=?, 9, 10, 11, 12, 6+5=?, 10, 11, 12, 13, 7+5=?, 10, 11, 12, 13, 5+8=?, 10, 11, 12, 13, 7+9=?, 14, 15, 16, 17, 5+9=?, 13, 14, 15, 16, 8+7=?, 15, 16, 17, 18, 8+7=?, 13, 14, 15, 16, 9+3=?, 11, 12, 13, 14

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