X2 y2 1 xy 1

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