You are playing the Regex Pattern Matcher game against gpt-4o-mini.

Game history:
Turn 1: gpt-4o-mini proposed text with target items: ["alice@example.com","bob.smith123@sub.domain.co.uk","(123) 456-7890","+44 20 7946 0958","2021-10-05","10/12/2023","3rd May 2023","ID-ABC-123","ID/DEF456-GHI","ID: 789|XYZ","$19.99","£25.00","€30.50","info@service.org","help@domain.co"]
o3-mini - (low) provided pattern: ^(alice@example\.com|bob\.smith123@sub\.domain\.co\.uk|\(123\) 456-7890|\+44 20 7946 0958|2021-10-05|10/12/2023|3rd May 2023|ID-ABC-123|ID/DEF456-GHI|ID: 789\|XYZ|\$19\.99|£25\.00|€30\.50|info@service\.org|help@domain\.co)$ (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.... (truncated)