HYDRO@HOME

#Natural phenomena #Signs, notations, symbols #Circles #Triangles, lines forming an angle #Lines, bands #Letters presenting a special form of writing #Colours #Waves, sound and micro waves. #At-symbol: @ #Circles containing one or more triangles or lines forming an angle (specify the content) #Circles containing one or more quadrilaterals (specify the content) #Circles containing one or more other geometrical figures (specify the content) #One triangle #Wavy lines or bands, zigzag lines or bands #Letters in relief or shaded #Letters embellished or decorated with a drawing #Letters underlined, overlined, framed or barred by one or more strokes #Letters in heavy characters #Blue