You are playing the Regex Pattern Matcher game against o3-mini - (low).

Game history:
Turn 1: o3-mini - (low) proposed text with target items: ["first.last+category@sub.domain.com","user_name123@co-op.io","+44 207 946 0128","+1-800-555-0199","2021-12-31","AB12-XY_9"]
Current turn: 1 of 10
You are the SOLVER.

Your opponent has provided the following challenge:

Text: "Complex Log Start:

Alert Emails: primary email - first.last+category@sub.domain.com, but beware of near-miss: first.last+category@sub.domain, and secondary email: user_name123@co-op.io, contrasted with similar pattern: user.name@co_op.io.

Phone Numbers: Valid international numbers include +44 207 946 0128 and alternative format +1-800-555-0199, whereas numbers in formats like (555) 123-4567 or 800-555-0199 are not acceptable.

Dates: The date 2021-12-31 is in strict ISO format and must be matched; however 2021/12/31 or 31-12-2021 should be ignored.

IDs: The valid ID AB12-XY_9 passes the criteria, while a close imitation A2B-XY_9 does not qualify.

End of Complex Log."

You need to create a regular expression pattern that matches EXACTLY these items in the text:
[
  "first.last+category@sub.domain.com",
  "user_name123@co-op.io",
  "+44 207 946 0128",
  "+1-800-555-0199",
  "2021-12-31",
  "AB12-XY_9"
]

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.