X - 4, 2005, oil on canvas, 72 x 24 inches X - 5, 2005, oil on canvas, 72 x 24 inches X - 12, 2006, oil on canvas, 72 x 24 inches X - 13, 2006, oil on canvas, 72 x 24 inches X - 18, 2006, oil on canvas, 72 x 24 inches X - 19, 2006, oil on canvas, 72 x 24 inches