a   b   x_y_r2     xy_y2_r2
cat pan 0.00250364 0.43533632
pan wye 0.01947936 0.43884972
wye cat 0.03300209 0.56123553
dog hat 0.01046190 0.50715503
dog pan 0.00592425 0.31501149
pan pan 0.00976773 0.46538961
hat hat 0.00132439 0.70872463
wye hat 0.00219734 0.35355828
pan hat 0.01305956 0.62235295
cat hat 0.03015046 0.49817102
hat wye 0.00051370 0.38635391
dog dog 0.00761928 0.40825738
wye dog 0.01104782 0.50155924
wye wye 0.03115632 0.32519256
dog wye 0.00091268 0.43241341
cat dog 0.00344232 0.47959568
hat pan 0.02514305 0.39715028
cat wye 0.00022446 0.46396142
hat cat 0.00060954 0.37351457
dog cat 0.00870494 0.54710253
hat dog 0.00191752 0.37205849
pan dog 0.01142671 0.54126338
cat cat 0.00027259 0.44676399
pan cat 0.03703581 0.27873933
wye pan 0.04672156 0.46254537
