{"content":"I'm creating an extremely difficult regex challenge to rigorously test advanced regex skills by incorporating mixed-format validation, variation in separators, and complex negations to avoid false positives. The patterns presented require sophisticated regex strategies, especially negative lookaheads, lookbehinds, and carefully crafted multi-condition regex patterns to distinguish valid targets from similar invalid strings.","function_call":{"name":"make_move","arguments":"{\n  \"reasoning\": \"I'm creating an extremely difficult regex challenge to rigorously test advanced regex skills by incorporating mixed-format validation, variation in separators, and complex negations to avoid false positives. The patterns presented require sophisticated regex strategies, especially negative lookaheads, lookbehinds, and carefully crafted multi-condition regex patterns to distinguish valid targets from similar invalid strings.\",\n  \"move\": {\n    \"text\": \"Emergency contacts: Dr. H... (truncated)