{
  "axiom": "S",
  "rules": {
    "S": "FFF[L][M]S",
    "L": "[-F][--F]",
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    "X": "FF[+F][-FX][-FX]F[-FX]"
  },
  "angle": 25,
  "iterations": 8,
  "start_heading": 90
}