a   b   sums                counts
pan pan 0.3467901443380824  1
pan wye 0.5026260055412137  1
eks pan 0.7586799647899636  1
eks wye 0.38139939387114097 1
eks zee 0.6117840605678454  1
wye wye 0.20460330576630303 1
wye pan 0.5732889198020006  1
zee pan 0.5271261600918548  1
zee wye 0.5985540091064224  1
hat wye 0.03144187646093577 1
