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_90@xyz.us","bob.smith@mail.server.com","mark2001@e-commerce.store","(919) 555-0123","+1-800-555-0199","123 Elm St - Apt #5","PO Box 456","789 Broadway Ave.","321 Road St","CUST-1234-AB","EMP-5678-CD","PRT-9101","REM-2341-XYZ"]
o1 - (low) provided pattern: ([\w._%+\-]+@[\w.\-]+\.[A-Za-z]{2,}|\(\d{3}\)\s?\d{3}-\d{4}|\+\d-\d{3}-\d{3}-\d{4}|\d+\sElm\sSt\s-\sApt\s#\d+|PO\sBox\s\d+|\d+\sBroadway\sAve\.|\d+\sRoad\sSt|CUST-\d{4}-[A-Z]{2}|EMP-\d{4}-[A-Z]{2}|PRT-\d{4}|REM-\d{4}-[A-Z]{3}) (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. ... (truncated)