a   b   i  x       y
pan pan 1  346790  0.726803
eks pan 2  758680  0.522151
wye wye 3  204603  0.338319
eks wye 4  381399  0.134189
wye pan 5  573289  0.863624
zee pan 6  527126  0.493221
eks zee 7  611784  0.187885
zee wye 8  598554  0.976181
hat wye 9  31441.9 0.749551
pan wye 10 502626  0.952618
