a   b   sums
pan pan 0.34679014
pan wye 0.50262601
eks pan 0.75867996
eks wye 0.38139939
eks zee 0.61178406
wye wye 0.20460331
wye pan 0.57328892
zee pan 0.52712616
zee wye 0.59855401
hat wye 0.03144188
