{
  "matrix": [
    [
      "25/2",
      0,
      0,
      0
    ],
    [
      4,
      1,
      2,
      0
    ]
  ],
  "values": [
    1250,
    430
  ],
  "rank": 2,
  "kernel_basis": [
    [
      0,
      -2,
      1,
      0
    ],
    [
      0,
      0,
      0,
      1
    ]
  ],
  "explanation": "t cancels from the cumulative sum; lambda trades against twice a"
}