activex Bacteria Blocking System

#Circles #Lines, bands #Letters presenting a special form of writing #Colours #One circle #Circles containing other figurative elements #Circles containing one or more letters #Circles with dark surfaces or parts of surfaces #Thick lines, bands #Oblique lines or bands #Series of letters presenting different forms of writing #Series of letters in different dimensions #Letters in light-coloured characters on a dark background #Three predominant colours