The mark consists of a rectangle which is divided by vertical lines into five major sub-parts and divided by horizontal lines into three major sub-parts. The two vertically-divided sub-parts on the far right of the rectangle are smaller than the rest. Additionally, counting from left to right, the second and third vertically-divided sub-parts include additional vertical lines: the second vertically-divided sub-part includes a vertical line in between the top and bottom interior horizontal lines, while the third vertically-divided sub-part includes vertical lines above the top interior horizontal line and below the bottom interior horizontal line.