This regex pattern has been carefully crafted to match exactly the 12 target items in the provided text while avoiding invalid items and decoys. It handles multiple cases: valid email formats include subdomains and '+' symbols while avoiding incorrect email formats (invalid dots or commas); phone numbers include international formats, separators, and optional extensions while excluding malformed ones; dates are matched in specific valid formats (e.g., full month names, abbreviations, underscores); and identifiers and references such as EMP, UserID, TicketNo, and Ref are matched based on their clear patterns while avoiding invalid ones like partial or malformed reference numbers.