“…For 9-spot patterns, Make runs at 9 points which consist of a central point at (3,3,3) and 8 points at the corners of a cube :'lurrounding the central point. These 8 points are (1,1,1), (1,1,3), (1,3,1), (1,3,3), (3,1,1), (3,1,3) (3,3,1) and (3,3,3).…”