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      "i": 6,
      "SP_gear": 3,
      "SP_rail": "companion",
      "Flood_boundary": "Flood close",
      "a_cumulative_index_shift": 0,
      "b_regular_Gear_coordinate_shift": 2,
      "cumulative_ON_Shem_index": 6,
      "regular_MT_Gear": 4,
      "S": -6344,
      "q": -5284,
      "R": 2651,
      "n": 3709,
      "cumulative_source_admitted": true,
      "regular_source_admitted": false,
      "joint_source_admission": false,
      "regular_source_record": null,
      "left_right_widths": [
        1060,
        1058
      ],
      "crosswidths": [
        [
          8995,
          10053
        ],
        [
          7935,
          8993
        ]
      ],
      "two17K": false,
      "two2K_sides": false,
      "allK": false,
      "phases": [
        {
          "phase": "-1/4",
          "S": "-25377/4",
          "q": "-21137/4",
          "R": "10603/4",
          "n": "14835/4",
          "two17K": false,
          "allK": false,
          "joint_source_admission": false
        },
        {
          "phase": "1/4",
          "S": "-25375/4",
          "q": "-21135/4",
          "R": "10605/4",
          "n": "14837/4",
          "two17K": false,
          "allK": false,
          "joint_source_admission": false
        }
      ]
    },
    {
      "i": 6,
      "SP_gear": 3,
      "SP_rail": "companion",
      "Flood_boundary": "Flood close",
      "a_cumulative_index_shift": 2,
      "b_regular_Gear_coordinate_shift": 0,
      "cumulative_ON_Shem_index": 8,
      "regular_MT_Gear": 3,
      "S": -6342,
      "q": -5284,
      "R": 2649,
      "n": 3709,
      "cumulative_source_admitted": false,
      "regular_source_admitted": true,
      "joint_source_admission": false,
      "regular_source_record": {
        "tradition": "MT",
        "gear": 3,
        "role": "Flood close",
        "Cainan": 1,
        "Terah60": 1,
        "full430": 1,
        "center": 2649,
        "base_native_Cainan": 0,
        "base_center": 2459
      },
      "left_right_widths": [
        1058,
        1060
      ],
      "crosswidths": [
        [
          8991,
          10051
        ],
        [
          7933,
          8993
        ]
      ],
      "two17K": false,
      "two2K_sides": false,
      "allK": false,
      "phases": [
        {
          "phase": "-1/4",
          "S": "-25369/4",
          "q": "-21137/4",
          "R": "10595/4",
          "n": "14835/4",
          "two17K": false,
          "allK": false,
          "joint_source_admission": false
        },
        {
          "phase": "1/4",
          "S": "-25367/4",
          "q": "-21135/4",
          "R": "10597/4",
          "n": "14837/4",
          "two17K": false,
          "allK": false,
          "joint_source_admission": false
        }
      ]
    },
    {
      "i": 6,
      "SP_gear": 3,
      "SP_rail": "companion",
      "Flood_boundary": "Flood close",
      "a_cumulative_index_shift": 2,
      "b_regular_Gear_coordinate_shift": 2,
      "cumulative_ON_Shem_index": 8,
      "regular_MT_Gear": 4,
      "S": -6342,
      "q": -5284,
      "R": 2651,
      "n": 3709,
      "cumulative_source_admitted": false,
      "regular_source_admitted": false,
      "joint_source_admission": false,
      "regular_source_record": null,
      "left_right_widths": [
        1058,
        1058
      ],
      "crosswidths": [
        [
          8993,
          10051
        ],
        [
          7935,
          8993
        ]
      ],
      "two17K": true,
      "two2K_sides": true,
      "allK": true,
      "phases": [
        {
          "phase": "-1/4",
          "S": "-25369/4",
          "q": "-21137/4",
          "R": "10603/4",
          "n": "14835/4",
          "two17K": true,
          "allK": true,
          "joint_source_admission": false
        },
        {
          "phase": "1/4",
          "S": "-25367/4",
          "q": "-21135/4",
          "R": "10605/4",
          "n": "14837/4",
          "two17K": true,
          "allK": true,
          "joint_source_admission": false
        }
      ]
    },
    {
      "i": 7,
      "SP_gear": 3,
      "SP_rail": "primary",
      "Flood_boundary": "Flood start",
      "a_cumulative_index_shift": 0,
      "b_regular_Gear_coordinate_shift": 0,
      "cumulative_ON_Shem_index": 7,
      "regular_MT_Gear": 3,
      "S": -6343,
      "q": -5283,
      "R": 2650,
      "n": 3710,
      "cumulative_source_admitted": true,
      "regular_source_admitted": true,
      "joint_source_admission": true,
      "regular_source_record": {
        "tradition": "MT",
        "gear": 3,
        "role": "Flood start",
        "Cainan": 1,
        "Terah60": 1,
        "full430": 1,
        "center": 2650,
        "base_native_Cainan": 0,
        "base_center": 2460
      },
      "left_right_widths": [
        1060,
        1060
      ],
      "crosswidths": [
        [
          8993,
          10053
        ],
        [
          7933,
          8993
        ]
      ],
      "two17K": true,
      "two2K_sides": false,
      "allK": false,
      "phases": [
        {
          "phase": "-1/4",
          "S": "-25373/4",
          "q": "-21133/4",
          "R": "10599/4",
          "n": "14839/4",
          "two17K": true,
          "allK": false,
          "joint_source_admission": true
        },
        {
          "phase": "1/4",
          "S": "-25371/4",
          "q": "-21131/4",
          "R": "10601/4",
          "n": "14841/4",
          "two17K": true,
          "allK": false,
          "joint_source_admission": true
        }
      ]
    },
    {
      "i": 7,
      "SP_gear": 3,
      "SP_rail": "primary",
      "Flood_boundary": "Flood start",
      "a_cumulative_index_shift": 0,
      "b_regular_Gear_coordinate_shift": 2,
      "cumulative_ON_Shem_index": 7,
      "regular_MT_Gear": 4,
      "S": -6343,
      "q": -5283,
      "R": 2652,
      "n": 3710,
      "cumulative_source_admitted": true,
      "regular_source_admitted": false,
      "joint_source_admission": false,
      "regular_source_record": null,
      "left_right_widths": [
        1060,
        1058
      ],
      "crosswidths": [
        [
          8995,
          10053
        ],
        [
          7935,
          8993
        ]
      ],
      "two17K": false,
      "two2K_sides": false,
      "allK": false,
      "phases": [
        {
          "phase": "-1/4",
          "S": "-25373/4",
          "q": "-21133/4",
          "R": "10607/4",
          "n": "14839/4",
          "two17K": false,
          "allK": false,
          "joint_source_admission": false
        },
        {
          "phase": "1/4",
          "S": "-25371/4",
          "q": "-21131/4",
          "R": "10609/4",
          "n": "14841/4",
          "two17K": false,
          "allK": false,
          "joint_source_admission": false
        }
      ]
    },
    {
      "i": 7,
      "SP_gear": 3,
      "SP_rail": "primary",
      "Flood_boundary": "Flood start",
      "a_cumulative_index_shift": 2,
      "b_regular_Gear_coordinate_shift": 0,
      "cumulative_ON_Shem_index": 9,
      "regular_MT_Gear": 3,
      "S": -6341,
      "q": -5283,
      "R": 2650,
      "n": 3710,
      "cumulative_source_admitted": false,
      "regular_source_admitted": true,
      "joint_source_admission": false,
      "regular_source_record": {
        "tradition": "MT",
        "gear": 3,
        "role": "Flood start",
        "Cainan": 1,
        "Terah60": 1,
        "full430": 1,
        "center": 2650,
        "base_native_Cainan": 0,
        "base_center": 2460
      },
      "left_right_widths": [
        1058,
        1060
      ],
      "crosswidths": [
        [
          8991,
          10051
        ],
        [
          7933,
          8993
        ]
      ],
      "two17K": false,
      "two2K_sides": false,
      "allK": false,
      "phases": [
        {
          "phase": "-1/4",
          "S": "-25365/4",
          "q": "-21133/4",
          "R": "10599/4",
          "n": "14839/4",
          "two17K": false,
          "allK": false,
          "joint_source_admission": false
        },
        {
          "phase": "1/4",
          "S": "-25363/4",
          "q": "-21131/4",
          "R": "10601/4",
          "n": "14841/4",
          "two17K": false,
          "allK": false,
          "joint_source_admission": false
        }
      ]
    },
    {
      "i": 7,
      "SP_gear": 3,
      "SP_rail": "primary",
      "Flood_boundary": "Flood start",
      "a_cumulative_index_shift": 2,
      "b_regular_Gear_coordinate_shift": 2,
      "cumulative_ON_Shem_index": 9,
      "regular_MT_Gear": 4,
      "S": -6341,
      "q": -5283,
      "R": 2652,
      "n": 3710,
      "cumulative_source_admitted": false,
      "regular_source_admitted": false,
      "joint_source_admission": false,
      "regular_source_record": null,
      "left_right_widths": [
        1058,
        1058
      ],
      "crosswidths": [
        [
          8993,
          10051
        ],
        [
          7935,
          8993
        ]
      ],
      "two17K": true,
      "two2K_sides": true,
      "allK": true,
      "phases": [
        {
          "phase": "-1/4",
          "S": "-25365/4",
          "q": "-21133/4",
          "R": "10607/4",
          "n": "14839/4",
          "two17K": true,
          "allK": true,
          "joint_source_admission": false
        },
        {
          "phase": "1/4",
          "S": "-25363/4",
          "q": "-21131/4",
          "R": "10609/4",
          "n": "14841/4",
          "two17K": true,
          "allK": true,
          "joint_source_admission": false
        }
      ]
    }
  ],
  "four_choice_summary": [
    {
      "a": 0,
      "b": 0,
      "annual_cases": 5,
      "joint_admitted": 5,
      "two17K": true,
      "two2K_and_allK": false,
      "widths": [
        1060,
        1060
      ],
      "crosswidths": [
        [
          8993,
          10053
        ],
        [
          7933,
          8993
        ]
      ]
    },
    {
      "a": 0,
      "b": 2,
      "annual_cases": 5,
      "joint_admitted": 3,
      "two17K": false,
      "two2K_and_allK": false,
      "widths": [
        1060,
        1058
      ],
      "crosswidths": [
        [
          8995,
          10053
        ],
        [
          7935,
          8993
        ]
      ]
    },
    {
      "a": 2,
      "b": 0,
      "annual_cases": 5,
      "joint_admitted": 3,
      "two17K": false,
      "two2K_and_allK": false,
      "widths": [
        1058,
        1060
      ],
      "crosswidths": [
        [
          8991,
          10051
        ],
        [
          7933,
          8993
        ]
      ]
    },
    {
      "a": 2,
      "b": 2,
      "annual_cases": 5,
      "joint_admitted": 3,
      "two17K": true,
      "two2K_and_allK": true,
      "widths": [
        1058,
        1058
      ],
      "crosswidths": [
        [
          8993,
          10051
        ],
        [
          7935,
          8993
        ]
      ]
    }
  ],
  "counts": {
    "annual_configurations": 20,
    "phase_configurations": 40,
    "source_admitted_annual": 14,
    "source_admitted_phases": 28,
    "formal_two17K_annual": 10,
    "source_admitted_two17K_annual": 8,
    "formal_allK_annual": 5,
    "source_admitted_allK_annual": 3
  },
  "rank_and_choice": {
    "duration_incidence_rank": 3,
    "two_choice_sensitivity_rank": 2,
    "equal17K_choice_constraint": "b\u2212a=0, rank1: admits00and22",
    "allK_choice_constraint": "a=2 and b=2, rank2: selects22 in this finite menu",
    "a_b_are_source_distinct": true,
    "source_prescribed_selector_established": false,
    "new_independent_empirical_measurements": false
  },
  "interpretation": "Equal17K bridges alone do not select the allK rectangle. The00 route preserves equal17K in all five source cases with1060-year sides;22 alone yields2K sides/allK and has three admitted cases. The finite choice audit establishes conditional specificity, not a source rule prescribing22.",
  "suggested_next_bounded_question": "Audit the minimal independent equation set and unresolved source-selector obligation after distinguishing the00and22 alternatives, retaining finite source boundaries and exact phase ancestry.",
  "later_step_executed": false
}
