{
  "parameterization": "unit direction = ((1-t^2)/(1+t^2), 2t/(1+t^2))",
  "shapes": [
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        "denominator": 1
      },
      "y": {
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        "denominator": 1
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      "half_angle_t1": {
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        "denominator": 862845
      },
      "half_angle_t2": {
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    {
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      "half_angle_t1": {
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      "half_angle_t2": {
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    {
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      "y": {
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      "radius": {
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      "half_angle_t1": {
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      "half_angle_t2": {
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    {
      "x": {
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      "radius": {
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      "half_angle_t1": {
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      "half_angle_t2": {
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  "pair_count_multiset": [
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  "crossings": 46,
  "regions": 55
}