# C596 — Relate internal and external27-unit partitions

## Question

How does the retained ancestry order compare with schematic birth-head spacing?

## Inputs

```json
{
  "ancestry_blocks": [
    6,
    1,
    5,
    1,
    7,
    7
  ],
  "external_counts": [
    14,
    13
  ],
  "internal_counts": [
    13,
    14
  ],
  "units": [
    70,
    72,
    180,
    182
  ]
}
```

## Sources

```json
[
  "File68 §7; File69 §3.4A"
]
```

## Opened utc

2026-09-28T00:23:40.672270+00:00

## Results

```json
{
  "count_partitions": [
    [
      70,
      [
        980,
        910
      ],
      [
        910,
        980
      ],
      1890
    ],
    [
      72,
      [
        1008,
        936
      ],
      [
        936,
        1008
      ],
      1944
    ],
    [
      180,
      [
        2520,
        2340
      ],
      [
        2340,
        2520
      ],
      4860
    ],
    [
      182,
      [
        2548,
        2366
      ],
      [
        2366,
        2548
      ],
      4914
    ]
  ],
  "ancestry_total": 27
}
```

## Finding

Internal13|14 and external14|13 are opposite ordered partitions of the same27 carrier units. This is reversal of component order, not decimal reversal, and it retains the source-specific genealogical inventories.

## Reassessment

Locate the actual27-row endpoint and distinguish the28-row completion.

## Checks

```json
{
  "counts": true,
  "order": true
}
```

## Closed utc

2026-09-28T00:23:40.672514+00:00

## Record provenance

Exact record hash: `df4f33b398f2fe60e06715ec7351714ea2949fab6e40967a9a286d98154e3375`

Source journal: `Research_Cycles/C0532_C0631/journal.json`