{
  "sum": {
    "cat": {
      "pan": {
        "catpan": 42.327158262573356
      },
      "hat": {
        "cathat": 43.18440957220826
      },
      "dog": {
        "catdog": 39.2414728534826
      },
      "wye": {
        "catwye": 45.19677452417291
      },
      "cat": {
        "catcat": 37.89414847588904
      }
    },
    "pan": {
      "wye": {
        "panwye": 40.135299712550946
      },
      "pan": {
        "panpan": 36.2263342663248
      },
      "hat": {
        "panhat": 35.115869257879424
      },
      "dog": {
        "pandog": 37.81756018831723
      },
      "cat": {
        "pancat": 42.23567663351311
      }
    },
    "wye": {
      "cat": {
        "wyecat": 40.80572298410698
      },
      "hat": {
        "wyehat": 41.16669669994168
      },
      "dog": {
        "wyedog": 40.61954681601182
      },
      "wye": {
        "wyewye": 32.49097273832244
      },
      "pan": {
        "wyepan": 33.027195515326675
      }
    },
    "dog": {
      "hat": {
        "doghat": 43.515162210434674
      },
      "pan": {
        "dogpan": 45.61401108323896
      },
      "dog": {
        "dogdog": 43.545955695964984
      },
      "wye": {
        "dogwye": 37.223794671791296
      },
      "cat": {
        "dogcat": 45.64259509789859
      }
    },
    "hat": {
      "hat": {
        "hathat": 48.05889741913474
      },
      "wye": {
        "hatwye": 34.05426961857805
      },
      "pan": {
        "hatpan": 42.53875750027864
      },
      "cat": {
        "hatcat": 44.325654701613004
      },
      "dog": {
        "hatdog": 37.11424443327952
      }
    }
  }
}
a   b   ab     sum
cat pan catpan 42.327158262573356
cat hat cathat 43.18440957220826
cat dog catdog 39.2414728534826
cat wye catwye 45.19677452417291
cat cat catcat 37.89414847588904
pan wye panwye 40.135299712550946
pan pan panpan 36.2263342663248
pan hat panhat 35.115869257879424
pan dog pandog 37.81756018831723
pan cat pancat 42.23567663351311
wye cat wyecat 40.80572298410698
wye hat wyehat 41.16669669994168
wye dog wyedog 40.61954681601182
wye wye wyewye 32.49097273832244
wye pan wyepan 33.027195515326675
dog hat doghat 43.515162210434674
dog pan dogpan 45.61401108323896
dog dog dogdog 43.545955695964984
dog wye dogwye 37.223794671791296
dog cat dogcat 45.64259509789859
hat hat hathat 48.05889741913474
hat wye hatwye 34.05426961857805
hat pan hatpan 42.53875750027864
hat cat hatcat 44.325654701613004
hat dog hatdog 37.11424443327952
