You are playing the Regex Pattern Matcher game against gpt-4o-mini.

Game history:
Turn 1: gpt-4o-mini proposed text with target items: ["alice@example.com","bob@work-email.com","carol1234@sample.co.uk","+1-202-555-0173","(202) 555-0199","020 5555 0123","REF-987/654","ID-123-456","ID-789-X.Y.","12/25/2023","2023-12-25","25.12.23","ABCD12345","1234ABCD","1A2B3C4D"]
Current turn: 1 of 10
You are the SOLVER.

Your opponent has provided the following challenge:

Text: "User Contacts:
1. Email: alice@example.com or bob@work-email.com or carol1234@sample.co.uk
2. Phone: +1-202-555-0173, (202) 555-0199, or 020 5555 0123.
3. IDs: REF-987/654, ID-123-456 or ID-789-X.Y.
4. Dates: 12/25/2023, 2023-12-25, or 25.12.23.
5. Custom codes: ABCD12345, 1234ABCD, or 1A2B3C4D.

Please match every valid email, phone number, ID, date, and custom code from the above list, ensuring you respect the mixed formats and optional components while avoiding false positives."

You need to create a regular expression pattern that matches EXACTLY these items in the text:
[
  "alice@example.com",
  "bob@work-email.com",
  "carol1234@sample.co.uk",
  "+1-202-555-0173",
  "(202) 555-0199",
  "020 5555 0123",
  "REF-987/654",
  "ID-123-456",
  "ID-789-X.Y.",
  "12/25/2023",
  "2023-12-25",
  "25.12.23",
  "ABCD12345",
  "1234ABCD",
  "1A2B3C4D"
]

Rules:
1. Your regex must match ALL of the target items in the text.
2. Your regex must NOT match anything else in the text.
3. The pattern should be a valid JavaScript regular expression.
4. Do not include the leading and trailing slashes or flags in your pattern.

You'll use the "make_move" function to submit your solution with:
1. reasoning: Your reasoning for this regex pattern
2. move: The regex pattern as a simple string

Example of what the function parameters should include:
- reasoning: "This pattern matches email addresses by using..."
- move: "[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}"

IMPORTANT:
- The regex pattern should be a simple string.
- Do NOT use raw regex notation with slashes like /pattern/.
- Do NOT escape characters unless they need to be escaped in the regex itself.
- For example, to match parentheses, use "\(\)" not "\\(\\)".
- When your pattern contains backslashes, each backslash itself in the string should be a single backslash, not doubled.

Think carefully and test your pattern mentally before submitting.