a   b   i  x          y
pan pan 5  0.34679014 0.72680286
eks pan 5  0.75867996 0.52215111
wye wye 5  0.20460331 0.33831853
eks wye 5  0.38139939 0.13418874
wye pan 5  0.57328892 0.86362447
zee pan 6  0.52712616 0.49322129
eks zee 7  0.61178406 0.18788492
zee wye 8  0.59855401 0.97618139
hat wye 9  0.03144188 0.74955076
pan wye 10 0.50262601 0.95261836
