You are playing the Regex Pattern Matcher game against Gemini Flash 2.0.

Game history:
Turn 1: Gemini Flash 2.0 proposed text with target items: ["ITEM-20240101-ALPHA","ITEM-20241231-BETA","ITEM-20230315-GAMMA","ITEM-20221102-DELTA","ITEM-20240229-ALPHA","ITEM-20231027-BETA","ITEM-20220718-GAMMA"]
Current turn: 1 of 10
You are the SOLVER.

Your opponent has provided the following challenge:

Text: "Here are some tricky identifiers mixed with junk:

Valid IDs:
- ITEM-20240101-ALPHA
- ITEM-20241231-BETA
- ITEM-20230315-GAMMA
- ITEM-20221102-DELTA

Invalid IDs (similar but wrong):
- ITEM-20241301-ALPHA  (invalid month)
- ITEM-20240132-BETA   (invalid day)
- ITEM-20250101-ALPHA   (future year - only 2022, 2023, 2024 allowed)
- ITEM-20240101-ALPHAA (too many 'A's)
- ITEM-20240101-ALPIA (invalid characters!)
-  ITEM-20240101-ALPHA (leading whitespace)
-ITEM-20240101-ALPHA    (no leading space)
-ITEM-20240101-ALPHA-EXTRA (extra suffix)

Also, some decoy dates and words:
2024-01-01, apple, banana, 2024/02/29, ITEM-20211231-OMEGA, ITEM-20260101-ALPHA

More valid IDs scattered: ITEM-20240229-ALPHA, plus ITEM-20231027-BETA and ITEM-20220718-GAMMA.

Final invalid ID: ITEM-20240101-ALPH

"

You need to create a regular expression pattern that matches EXACTLY these items in the text:
[
  "ITEM-20240101-ALPHA",
  "ITEM-20241231-BETA",
  "ITEM-20230315-GAMMA",
  "ITEM-20221102-DELTA",
  "ITEM-20240229-ALPHA",
  "ITEM-20231027-BETA",
  "ITEM-20220718-GAMMA"
]

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.