a         b   i  x          y
XYXYXYpan pan 1  0.34679014 0.72680286
XYXYXYeks pan 2  0.75867996 0.52215111
XYXYXYwye wye 3  0.20460331 0.33831853
XYXYXYeks wye 4  0.38139939 0.13418874
XYXYXYwye pan 5  0.57328892 0.86362447
XYXYXYzee pan 6  0.52712616 0.49322129
XYXYXYeks zee 7  0.61178406 0.18788492
XYXYXYzee wye 8  0.59855401 0.97618139
XYXYXYhat wye 9  0.03144188 0.74955076
XYXYXYpan wye 10 0.50262601 0.95261836
