{
  "sum": {
    "cat": {
      "pan": {
        "catpan": 42.32715826
      },
      "hat": {
        "cathat": 43.18440957
      },
      "dog": {
        "catdog": 39.24147285
      },
      "wye": {
        "catwye": 45.19677452
      },
      "cat": {
        "catcat": 37.89414848
      }
    },
    "pan": {
      "wye": {
        "panwye": 40.13529971
      },
      "pan": {
        "panpan": 36.22633427
      },
      "hat": {
        "panhat": 35.11586926
      },
      "dog": {
        "pandog": 37.81756019
      },
      "cat": {
        "pancat": 42.23567663
      }
    },
    "wye": {
      "cat": {
        "wyecat": 40.80572298
      },
      "hat": {
        "wyehat": 41.16669670
      },
      "dog": {
        "wyedog": 40.61954682
      },
      "wye": {
        "wyewye": 32.49097274
      },
      "pan": {
        "wyepan": 33.02719552
      }
    },
    "dog": {
      "hat": {
        "doghat": 43.51516221
      },
      "pan": {
        "dogpan": 45.61401108
      },
      "dog": {
        "dogdog": 43.54595570
      },
      "wye": {
        "dogwye": 37.22379467
      },
      "cat": {
        "dogcat": 45.64259510
      }
    },
    "hat": {
      "hat": {
        "hathat": 48.05889742
      },
      "wye": {
        "hatwye": 34.05426962
      },
      "pan": {
        "hatpan": 42.53875750
      },
      "cat": {
        "hatcat": 44.32565470
      },
      "dog": {
        "hatdog": 37.11424443
      }
    }
  }
}
a   b   sum.catpan
cat pan 42.32715826

a   b   sum.cathat
cat hat 43.18440957

a   b   sum.catdog
cat dog 39.24147285

a   b   sum.catwye
cat wye 45.19677452

a   b   sum.catcat
cat cat 37.89414848

a   b   sum.panwye
pan wye 40.13529971

a   b   sum.panpan
pan pan 36.22633427

a   b   sum.panhat
pan hat 35.11586926

a   b   sum.pandog
pan dog 37.81756019

a   b   sum.pancat
pan cat 42.23567663

a   b   sum.wyecat
wye cat 40.80572298

a   b   sum.wyehat
wye hat 41.16669670

a   b   sum.wyedog
wye dog 40.61954682

a   b   sum.wyewye
wye wye 32.49097274

a   b   sum.wyepan
wye pan 33.02719552

a   b   sum.doghat
dog hat 43.51516221

a   b   sum.dogpan
dog pan 45.61401108

a   b   sum.dogdog
dog dog 43.54595570

a   b   sum.dogwye
dog wye 37.22379467

a   b   sum.dogcat
dog cat 45.64259510

a   b   sum.hathat
hat hat 48.05889742

a   b   sum.hatwye
hat wye 34.05426962

a   b   sum.hatpan
hat pan 42.53875750

a   b   sum.hatcat
hat cat 44.32565470

a   b   sum.hatdog
hat dog 37.11424443
