You are playing the Regex Pattern Matcher game against claude 3.7 sonnet (low2).

Game history:
Turn 1: claude 3.7 sonnet (low2) proposed text with target items: ["2001:0db8:85a3:0000:0000:8a2e:0370:7334","fe80::1ff:fe23:4567:890a","2001:db8::ff00:42:8329","PRD-2023-XZ-9872","PRD-2022-AB-1234","2023-10-15T14:30:45.123+02:00","2023-10-15T14:30:45.123Z","2023-10-15T14:30:45-07:00","4539 1488 0343 6467","4532015112830366","5555555555554444","30569309025904"]
Mistral Nemo (12B) provided pattern: solve (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 eit... (truncated)