data/d4_data/metadata.json

{
  "0": "[0, 1, 2, 3]",
  "1": "[1, 2, 3, 0]",
  "2": "[2, 3, 0, 1]",
  "3": "[3, 2, 1, 0]",
  "4": "[0, 3, 2, 1]",
  "5": "[1, 0, 3, 2]",
  "6": "[2, 1, 0, 3]",
  "7": "[3, 0, 1, 2]"
}