{
  "axiom": "H",
  "rules": {
    "H": "ff[+++++B][++++C]H",
    "B": "FF[+C][-C]F[+B][-B]",
    "C": "F[+F[+G][-G]][-F[+G][-G]]"
  },
  "angle": 18,
  "iterations": 8,
  "start_heading": 90
}