PKU express plus+ Vitaflo

#Signs, notations, symbols #Circles #Quadrilaterals #Letters presenting a special form of writing #Mathematical signs #Several circles, juxtaposed, tangential or intersecting #Circles containing one or more letters #Circles with dark surfaces or parts of surfaces #Two quadrilaterals, one inside the other #Quadrilaterals containing one or more circles, ellipses or polygons (specify the content) #Quadrilaterals containing one or more letters #Quadrilaterals with dark surfaces or parts of surfaces #Series of letters presenting different forms of writing #Series of letters in different dimensions #Letters in light-coloured characters on a dark background