Task: Program Execution
Input (English): 8, ['6601', '2565', 'H', '6685', 'C', '835', '2221', '1205', '5661', '7107', '1867', '399', '1481', '9503', 'B', '2153', '4057', 'v', 'J', 'C']
Output (English): 6601, 5661, 4057