You are playing the Regex Pattern Matcher game against o3-mini - (high).

Game history:
Turn 1: o3-mini - (high) proposed text with target items: ["user.one+tag@example-mail.com","o'connor_david@sub.mail-domain.org","+1 (800) 555-1212 ext.007","0044-20-7946-0958","2021-04-30","30/04/2021","AB-404-AB","CD-001-CD"]
Llama 3.3 70B Instruct provided pattern: [a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+.[a-zA-Z]{2,}|+1s(d{3})sd{3}-d{4}s(ext.d{3})|0044-d{2}-d{4}-d{4}|d{4}-d{2}-d{2}|d{2}/d{2}/d{4}|[A-Z]{2}-d{3}-[A-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 ... (truncated)