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More complex example: Randomizing multiple measures with multiple pages (I call this "nested randomization")

For this example, we will randomize 3 measures named A, B, and C as above. This time, each measure has 9 very wordy long answer questions spread across 3 pages each so they can fit on a small screen without the need to scroll. (Please note for the sake of sanity, this example is intentionally short. You can add as many pages, measures and questions as needed for you own application.)

At the top layer, we want to randomize the order of each of the 3 measures A, B, and C. For example, ABC, CBA, BCA, etc. Underneith, measure A consists of pages 1-3, B pages 4-6, and C pages 7-9

Additionally, we will randomize the pages underneith measures A, B and C - pages 123, 456, 789 respectively. (e.g. 123, 231, 213 & 654, 456, 564, etc.). A matrix would look like this: