This regex is constructed using alternation (|) to match each of the 12 target items exactly. I've carefully escaped all regex special characters like dots, brackets, parentheses, plus signs, etc. For sequences like \n and \" in the target items, I've used \\n and \\\" in the regex because we need to match the literal backslash followed by those characters. For example, in item #1, the \"quoted\" part contains backslashes that need to be escaped properly in regex. The same applies to other items with escaped quotes, newlines, and special characters. Each item is precisely matched with no possibility of matching anything else in the text.