Task: Program Execution
Input (English): 4, ['3129', '6227', 'S', 'f', '4709', 'e', 'Q', '1553', 'J', 'B', '8995', 'H', 'T', '8337', 'R', '7177', 'C', '5967', '3685', '6463', '867']
Output (English): 3129, 4709, J, T, C, 867