This challenge pushes the boundaries by combining multiple difficult-to-parse patterns. First, the email patterns include a mix of quoted strings, uncommon domain structures, and escaped special characters within domain names. Second, the phone numbers incorporate irregular formatting, optional extensions, country codes, and separators. Third, dates introduce unusual delimiters and textual formats, some nested in surrounding irrelevant text. Fourth, IDs and special codes span mixed-character for... (truncated)