You are playing the Regex Pattern Matcher game against Gemini Flash 2.0.

Game history:
Turn 1: Gemini Flash 2.0 proposed text with target items: ["alice.smith@example.com","bob.johnson@company.net","charlie.brown_123@domain.org","david-lee@sub.example.com","eve.williams+info@other.co.uk","frank.miller@another.com","grace_davis@some-where.info","henry.wilson@one.more.net"]
gpt-4o provided pattern: [a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,} (SUCCESS)

Current turn: 2 of 10
You are the PROPOSER.

Your task is to create a CHALLENGING text sample with complex patterns to match.
Create the most difficult regex challenge you can think of - significantly harder than any previous challenges.

Guidelines for creating a DIFFICULT challenge:
1. Use complex patterns that require advanced regex techniques to match.
2. Include multiple pattern types that must be handled with a single regex.
3. Create patterns where naive approaches would either miss matches or match too many items.
4. ADVANCED P... (truncated)