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#Quadrilaterals #Letters presenting a special form of writing #Other irregular parallelograms, trapezia and quadrilaterals, quadrilaterals containing one or more rounded corners #Two quadrilaterals, one inside the other #Quadrilaterals containing one or more letters #Quadrilaterals with inscriptions projecting beyond one or more of the sides thereof #Quadrilaterals with dark surfaces or parts of surfaces #Series of letters presenting different forms of writing