I'm creating an extremely difficult challenge that requires advanced regex techniques to handle multiple token formats – emails, phone numbers, and dates – all embedded within a complex text. The text includes valid tokens interwoven with deceptive false positives (e.g., nearly valid emails starting with a dot, poorly formatted phone numbers, and dates in non-target formats). Solving this challenge demands the use of advanced features like negative lookahead/lookbehind, careful alternation, esca... (truncated)