{
  "sum": {
    "cat": {
      "pan": 42.327158262573356,
      "hat": 43.18440957220826,
      "dog": 39.2414728534826,
      "wye": 45.19677452417291,
      "cat": 37.89414847588904
    },
    "pan": {
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      "pan": 36.2263342663248,
      "hat": 35.115869257879424,
      "dog": 37.81756018831723,
      "cat": 42.23567663351311
    },
    "wye": {
      "cat": 40.80572298410698,
      "hat": 41.16669669994168,
      "dog": 40.61954681601182,
      "wye": 32.49097273832244,
      "pan": 33.027195515326675
    },
    "dog": {
      "hat": 43.515162210434674,
      "pan": 45.61401108323896,
      "dog": 43.545955695964984,
      "wye": 37.223794671791296,
      "cat": 45.64259509789859
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    "hat": {
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      "pan": 42.53875750027864,
      "cat": 44.325654701613004,
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  }
}
a   b   sum
cat pan 42.327158262573356
cat hat 43.18440957220826
cat dog 39.2414728534826
cat wye 45.19677452417291
cat cat 37.89414847588904
pan wye 40.135299712550946
pan pan 36.2263342663248
pan hat 35.115869257879424
pan dog 37.81756018831723
pan cat 42.23567663351311
wye cat 40.80572298410698
wye hat 41.16669669994168
wye dog 40.61954681601182
wye wye 32.49097273832244
wye pan 33.027195515326675
dog hat 43.515162210434674
dog pan 45.61401108323896
dog dog 43.545955695964984
dog wye 37.223794671791296
dog cat 45.64259509789859
hat hat 48.05889741913474
hat wye 34.05426961857805
hat pan 42.53875750027864
hat cat 44.325654701613004
hat dog 37.11424443327952
