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A wooden box containing 13 painted wooden cubes: 4 white cubes, 4 green cubes and 5 yellow cubes.

Demonstrates the power of three by progressively tripling the previous piece, starting with a two centimeter cube. That cube is then triples with two similar cubes. Those three cubes are then tripled with two 6 x 2 x 2 centimeter prisms, eventually creating an 18 centimeter cube.