ideal HEATING

#Quadrilaterals #Lines, bands #Letters presenting a special form of writing #Colours #One quadrilateral #Quadrilaterals containing other figurative elements #Quadrilaterals containing one or more letters #Quadrilaterals with dark surfaces or parts of surfaces #One line or one band #Curved lines or bands (except A 26.11.13) #Letters surmounted by a sign of disproportionate size #Series of letters presenting different forms of writing #Series of letters in different dimensions #Letters underlined, overlined, framed or barred by one or more strokes #Letters in light-coloured characters on a dark background #Three predominant colours