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      "crop": "three_dot_candidate_17.png",
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      "crop": "three_dot_candidate_18.png",
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      ],
      "id": "three-dot-20",
      "context_bbox": [
        1144,
        2953,
        1364,
        3123
      ],
      "crop": "three_dot_candidate_20.png",
      "source_sha256": "a80191592add93a86ed3868f9e4e6ba3944ec20c9ffccc7d3e221b461344beba",
      "review_method": "Manual inspection of source crop and surrounding original page; labels encoded in this script.",
      "review_class": "illustration_fragment",
      "reason": "Components lie within tree/branch or insect illustrations; no textual separator alignment."
    },
    {
      "page": 56,
      "source": "73.jpg",
      "color": "black",
      "bbox": [
        1668,
        708,
        1692,
        751
      ],
      "detections": [
        {
          "threshold": 80,
          "bbox": [
            1668,
            708,
            1692,
            751
          ],
          "dots": [
            [
              1668,
              708,
              1678,
              717,
              90
            ],
            [
              1668,
              742,
              1678,
              751,
              90
            ],
            [
              1683,
              725,
              1692,
              735,
              90
            ]
          ]
        },
        {
          "threshold": 100,
          "bbox": [
            1668,
            708,
            1692,
            751
          ],
          "dots": [
            [
              1668,
              708,
              1678,
              717,
              90
            ],
            [
              1668,
              742,
              1678,
              751,
              90
            ],
            [
              1683,
              725,
              1692,
              735,
              90
            ]
          ]
        },
        {
          "threshold": 120,
          "bbox": [
            1668,
            708,
            1692,
            751
          ],
          "dots": [
            [
              1668,
              708,
              1678,
              717,
              90
            ],
            [
              1668,
              742,
              1678,
              751,
              90
            ],
            [
              1683,
              725,
              1692,
              735,
              90
            ]
          ]
        }
      ],
      "id": "three-dot-21",
      "context_bbox": [
        1570,
        644,
        1790,
        814
      ],
      "crop": "three_dot_candidate_21.png",
      "source_sha256": "a4c1c9ae1246c3197fc1d7bd0155cbc97f60d4bba84a104d45f180feab1814dc",
      "review_method": "Manual inspection of source crop and surrounding original page; labels encoded in this script.",
      "preceding_cipher_rune": "ᚫ",
      "review_class": "text",
      "line": 1,
      "line_runes_before_mark": 19,
      "page_rune_gap": 19,
      "master_marks_at_gap": ";",
      "master_line": "ᚫᛄ-ᛟᛋᚱ.ᛗᚣᛚᚩᚻ-ᚩᚫ-ᚳᚦᚷᚹ-ᚹᛚᚫ;ᛉ",
      "alignment_status": "Manual line/separator alignment to the master; not a fresh whole-page rune audit.",
      "physical_class": "inline_three_dot",
      "role_status": "unresolved",
      "triangle_points": "right",
      "expected_fourth_slot": {
        "bbox": [
          1654,
          725,
          1663,
          735
        ],
        "method": "Reflect middle square through the upper/lower square centerline. Assumes standard diamond geometry.",
        "checks": [
          {
            "threshold": 80,
            "ink": 11,
            "white": 79,
            "total": 90
          },
          {
            "threshold": 100,
            "ink": 11,
            "white": 79,
            "total": 90
          },
          {
            "threshold": 120,
            "ink": 11,
            "white": 79,
            "total": 90
          }
        ],
        "conclusion": "A filled fourth square is absent at this predicted position."
      }
    },
    {
      "page": 57,
      "source": "74.jpg",
      "color": "black",
      "bbox": [
        1233,
        2446,
        1275,
        2492
      ],
      "detections": [
        {
          "threshold": 80,
          "bbox": [
            1233,
            2446,
            1275,
            2492
          ],
          "dots": [
            [
              1233,
              2446,
              1242,
              2454,
              52
            ],
            [
              1262,
              2471,
              1271,
              2479,
              52
            ],
            [
              1267,
              2483,
              1275,
              2492,
              72
            ]
          ]
        },
        {
          "threshold": 100,
          "bbox": [
            1233,
            2446,
            1275,
            2492
          ],
          "dots": [
            [
              1233,
              2446,
              1242,
              2454,
              52
            ],
            [
              1262,
              2471,
              1271,
              2479,
              52
            ],
            [
              1267,
              2483,
              1275,
              2492,
              72
            ]
          ]
        },
        {
          "threshold": 120,
          "bbox": [
            1233,
            2446,
            1275,
            2492
          ],
          "dots": [
            [
              1233,
              2446,
              1242,
              2454,
              52
            ],
            [
              1262,
              2471,
              1271,
              2479,
              52
            ],
            [
              1267,
              2483,
              1275,
              2492,
              72
            ]
          ]
        }
      ],
      "id": "three-dot-22",
      "context_bbox": [
        1144,
        2384,
        1364,
        2554
      ],
      "crop": "three_dot_candidate_22.png",
      "source_sha256": "1dabc100ddbf1fc49715219636984eb6ad96a2bd8035e196c12e66db77a1077b",
      "review_method": "Manual inspection of source crop and surrounding original page; labels encoded in this script.",
      "review_class": "illustration_fragment",
      "reason": "Components lie within tree/branch or insect illustrations; no textual separator alignment."
    },
    {
      "page": 57,
      "source": "74.jpg",
      "color": "black",
      "bbox": [
        1167,
        2833,
        1192,
        2879
      ],
      "detections": [
        {
          "threshold": 80,
          "bbox": [
            1167,
            2833,
            1192,
            2879
          ],
          "dots": [
            [
              1167,
              2867,
              1179,
              2879,
              96
            ],
            [
              1175,
              2858,
              1187,
              2871,
              84
            ],
            [
              1179,
              2833,
              1192,
              2842,
              101
            ]
          ]
        },
        {
          "threshold": 100,
          "bbox": [
            1167,
            2833,
            1192,
            2879
          ],
          "dots": [
            [
              1167,
              2867,
              1179,
              2879,
              96
            ],
            [
              1175,
              2858,
              1187,
              2871,
              84
            ],
            [
              1179,
              2833,
              1192,
              2842,
              101
            ]
          ]
        },
        {
          "threshold": 120,
          "bbox": [
            1167,
            2833,
            1192,
            2879
          ],
          "dots": [
            [
              1167,
              2867,
              1179,
              2879,
              96
            ],
            [
              1175,
              2858,
              1187,
              2871,
              84
            ],
            [
              1179,
              2833,
              1192,
              2842,
              101
            ]
          ]
        }
      ],
      "id": "three-dot-23",
      "context_bbox": [
        1069,
        2771,
        1289,
        2941
      ],
      "crop": "three_dot_candidate_23.png",
      "source_sha256": "1dabc100ddbf1fc49715219636984eb6ad96a2bd8035e196c12e66db77a1077b",
      "review_method": "Manual inspection of source crop and surrounding original page; labels encoded in this script.",
      "review_class": "illustration_fragment",
      "reason": "Components lie within tree/branch or insect illustrations; no textual separator alignment."
    }
  ],
  "known_solution_control": {
    "page": 56,
    "source": "73.jpg",
    "runes": 85,
    "gap": 19,
    "full_known_plaintext_record_matches": true,
    "retained_plaintext_source_sha256": "d4d7bcbbf0188b2ab4f0e6668b61b16c8217767c202519ccc2a4c5ded21f158a",
    "formula": "plaintext = (cipher - (prime[index] - 1)) mod29. Rune56 is an unenciphered F and does not consume a key position. Zero-based indices.",
    "unenciphered_F_offset": 56,
    "window": [
      19,
      29
    ],
    "continuous_indices": [
      19,
      20,
      21,
      22,
      23,
      24,
      25,
      26,
      27,
      28
    ],
    "reset_indices": [
      0,
      1,
      2,
      3,
      4,
      5,
      6,
      7,
      8,
      9
    ],
    "known_continuation": "THEREEXISTS",
    "reset_continuation": "PULWNJWEOPH",
    "changed_rune_positions": [
      19,
      20,
      21,
      22,
      23,
      24,
      25,
      26,
      27,
      28
    ],
    "conclusion": "The known method continues its prime sequence across this three-dot mark. Resetting to index0 here fails this ten-rune known continuation. This supplies no new plaintext or universal rule for unsolved sections."
  },
  "limitations": [
    "Fixed-size isolated-component screen is not an exhaustive inventory of merged or differently sized marks.",
    "Manual candidate review and alignment are not independent full-page transcription.",
    "Repeated decorative copies and threshold reruns are not independent evidence.",
    "Master remains unchanged; this ledger carries the physical classification."
  ]
}