X2 y2 2xy 1

X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1
X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1
X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1X2 y2 2xy 1