I'm creating an extremely challenging regex task that combines multiple complex patterns. The text sample includes six target items spanning six different formats that require advanced regex techniques such as handling optional symbols, different separators, escaping special characters, and backreferences. The targets include an email with a plus sign and hyphenated domain, a phone number with international format and parentheses, an ISO date with hyphens, a tricky order code with a slash, a sym... (truncated)