A series is 224, 124, 268, 72, 328, 4

If another series is 644, ____, (y), _____, (z), ____, (x), which follows the same pattern as the series given above, then which of the following statement(s) is/are correct?

I. Sum of the first three-term of the series is (x + y + z) + 416

II. Sum of the second, fourth, and sixth term is 1460

III. (x) + y = 516 - z