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d-cecil: Two Tetrahedrons, Each of Three Triangles in Half Hexagon Form
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d-cecil: Two Single Slit Pop-ups Superimposed
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d-cecil: Tetrahedron Partially Collapsed
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d-cecil: Tetrahedron Inverted Being Collapsed
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d-cecil: Tetrahedron Almost Totally Collapsed
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d-cecil: Single Slit Pop-Up
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d-cecil: Single Pleated Triangle in Tent Form
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d-cecil: Single Pleated Square, in Tent Form
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d-cecil: Single Pleated Square, in Bowl Form
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d-cecil: Single Pleated Pentagon, in Tent Form
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d-cecil: Pleated Eight Segment Circle, in Tent Form
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d-cecil: Pleated Eight Segment Circle, in Bowl Form
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d-cecil: Four Ortagons Encircling a Square, in Bowl Form
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d-cecil: Four Octagons Encircling a Square, in Tent Form
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d-cecil: Five Pleated Figures, in Bowl Form
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d-cecil: Five Pleated Figures , in Plain View
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d-cecil: Five Pentagons Encircling a Pentagon, in Tent Form
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d-cecil: Five Pentagons Encircling a Pentagon, in Bowl Form
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d-cecil: A Pop-Up Form with Triangular Sides
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d-cecil: Single Pleated Pentagon, in Bowl Form
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d-cecil: Venn Diagram
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d-cecil: Pleated Circle With Diamond Shapes
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d-cecil: Colored Pleated Square
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d-cecil: Pastel Colored Pleated Circle
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d-cecil: Butterfly With Folds
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d-cecil: Close Up of Collapsable Box
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d-cecil: Two Diamond Tower
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d-cecil: Alternating Equal Heights & Equal Depths
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d-cecil: Round 1 Increasing
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d-cecil: Four Circular Grids