O.M.SA.

#Circles #Quadrilaterals #Letters presenting a special form of writing #Colours #Circles containing one or more letters #Other irregular parallelograms, trapezia and quadrilaterals, quadrilaterals containing one or more rounded corners #One quadrilateral #Quadrilaterals containing one or more circles, ellipses or polygons (specify the content) #Quadrilaterals with dark surfaces or parts of surfaces #Letters in relief or shaded #Series of letters presenting different forms of writing #Series of letters in different dimensions #Monograms formed of intertwined, overlapping or otherwise combined letters #Three predominant colours