{
  "alphabet": [
    "P",
    "Q",
    "R",
    "S"
  ],
  "ancestor": "PQRSPQRSPQRSPQRSPQRSPQRS",
  "ancestorLength": 24,
  "errorRates": [
    {
      "id": "low",
      "label": "low",
      "rate": 0.02
    },
    {
      "id": "medium",
      "label": "medium",
      "rate": 0.08
    },
    {
      "id": "high",
      "label": "high",
      "rate": 0.2
    }
  ],
  "seeds": [
    11,
    23,
    47
  ],
  "generations": 40,
  "selectedGenerations": [
    1,
    5,
    10,
    20,
    40
  ],
  "method": "mulberry32(seed); per position, with probability = rate, substitute a different symbol chosen uniformly from the other three; agreement = fraction of positions matching the generation-0 ancestor."
}