Design Feature:
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(1) Aeroplanes, helicopters
(2) Stylized aeroplanes
(3) One circle
(4) Rectangles
(5)
(6) Quadrilaterals containing one or more circles, ellipses or polygons (specify the content)
(7) Quadrilaterals containing one or more other geometrical figures (specify the content)
(8) Quadrilaterals containing other inscriptions
(9) Quadrilaterals with dark surfaces or parts of surfaces
(10) Other geometrical figures, indefinable designs
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