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  • Block 1: Cylinders vary in breadth-that is, they proceed from thick to thin
  • Block 2: Cylinders vary in both height and breath-that is, they proceed from large to small.
  • Block 3: Cylinders vary in both height and breadth, but inversely. That is, they proceed from short and wide to tall and thin. 
  • Block 4: Cylinders vary only in height-that is, they proceed from tall to short.

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