| 摘要 |
Apparatus including at least three 3-dimensional shapes, a first one of the 3-dimensional shapes being rotatably supported within a second one of the 3-dimensional shapes, the second one of the 3-dimensional shapes being rotatably supported within a third one of the 3-dimensional shapes, at least one of the 3-dimensional shapes including an opening capable of connecting at least one of the shapes to another one of the shapes.
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