NA Natürliche Auswahl

#Letters presenting a special form of writing #Dots #Letters or numerals forming some other geometrical figure #One quadrilateral #Several letters #Quadrilaterals containing one or more letters #Series of letters presenting different forms of writing #Letters in light-coloured characters on a dark background #Series of letters in different dimensions #Other irregular parallelograms, trapezia and quadrilaterals, quadrilaterals containing one or more rounded corners #Quadrilaterals with dark surfaces or parts of surfaces #Quadrilaterals containing one or more circles, ellipses or polygons (specify the content)