ABCDEFGHIJKLMNOPQRSTUVWXYZ
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my_points[0]my_points[1]my_points[2]my_points[3]
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rowcolrowcolrowcolrowcol
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points[0].rowpoints[0].colpoints[1].rowpoints[1].colpoints[2].rowpoints[2].colpoints[3].rowpoints[3].col
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address:10001004100810121016102010241028
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&my_points[i] = 1000 + i * 8
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&my_points[i].row = &my_points[i] + 0
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&my_points[i].col = &my_points[i] + 4
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