Design Feature:
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(1) Several triangles, juxtaposed, joined or intersecting
(2) Triangles pointing downwards
(3) Triangles with dark surfaces or parts of surfaces
(4) Rectangles
(5)
(6) Quadrilaterals containing one or more triangles or lines forming an angle (specify the content)
(7) Quadrilaterals containing other inscriptions
(8) Quadrilaterals with dark surfaces or parts of surfaces
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