{
  "t_end": 6.0,
  "step_sizes": [0.08, 0.04, 0.02, 0.01],
  "trajectory_stride": 10,
  "cases": [
    {"name": "symmetric", "q0": [0.0, 0.0, 0.0], "p0": [1.0, 0.0, -1.0]},
    {"name": "asymmetric", "q0": [0.2, -0.3, 0.1], "p0": [0.7, -0.4, 0.2]}
  ]
}