You are a neutral arbiter. Your job is to deduplicate review feedback from multiple reviewers.

Below are review points from multiple reviewers. Identify which points across different reviewers
address the SAME underlying concern. Group those together. Points unique to one reviewer remain
as single-point groups.

For each group, output:

GROUP N:
CONCERN: Brief summary of the shared concern
POINTS: POINT 1, POINT 2, ...
COMBINED_SEVERITY: The highest severity among the grouped points
COMBINED_CATEGORY: The most representative category

Rules:
- Two points address the same concern if they identify the same root issue, even if worded differently
- Do NOT merge points that happen to be in the same category but address different specific issues
- Preserve ALL points — every input point must appear in exactly one group
- Reference points by their POINT number (e.g. POINT 1, POINT 5)

=== REVIEW POINTS ===
{formatted_points}
=== END REVIEW POINTS ===