Upper triangular need to be interpreted as getting only zero entries under the main diagonal, which starts with the higher left corner. Case in point[edit] M A M B M C M D M E M File M G M H M I M J M K M L http://plus-size-clubwear52.suomiblog.com/the-definitive-guide-to-how-t-u-an-l-b-d-10954208