This pattern matches the specified target items by using the exact strings, ensuring that all items are matched exactly without matching any other parts of the text. It combines all target items into a single pattern using the '|' character, which acts as an OR operator in regex, allowing the pattern to match any of the specified strings. The pattern does not include any unnecessary escape characters, except where needed for special regex characters, and it does not use leading or trailing slashes or flags as per the requirements.