GPT 5.4 on 28-7

You are solving a spreadsheet benchmark task in a real workbook. Objective: Produce the correct final workbook state for the expected answer region. What matters: - Only the values in the expected answer region will be graded. - The workbook is the answer. Instructions: 1. Read the workbook and inspect the relevant data region first. 2. Infer the required result for the provided workbook instance. 3. Write the final value(s) directly into the expected answer region. 4. Do not rely on prose, formulas in your chat response, pseudocode, or VBA as the answer unless the benchmark explicitly requires those to be written into cells. 5. If the natural-language task asks for a general method, formula, or macro, convert that into the concrete result needed for this workbook instance. 6. Keep your final text response short and only summarize the workbook cells you changed. Relevant data region(s): A1:C26 Expected answer region(s): A1:C26 Expected answer sheet(s): Sheet1 Task: How can I delete all rows in an Excel column that occur after and including a part number starting with '400-' followed by any characters and ending in '-A', up to but not including the next part number following the same initial '400-' pattern? Note that if the part number ending in '-A' does not exist, no rows should be deleted. There can be any number of blank cells between these part numbers, and the part number immediately following the one ending in '-A' might differ between cases.