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- Set 1: Ten cylinders proceed from thick to thin and are red in color (differ in diameter)
- Set 2: Ten cylinders vary in both height and width - that is, they proceed from large to small and are yellow (differ in height and diameter)
- Set 3: Ten cylinders proceed from short and wide to tall and thin and are green in color (differ in height and diameter)
- Set 4: Ten cylinders proceed from tall to short and are blue in color (differ in height)
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