Task: Program Execution
Input (English): 1, 9, ['M', '2531', '5315', 'C', 'B', 'P', '641', 'N', '8363', 'L', '1201', 'S', '5455', '6669', 'Q', 'm', 'P', '7573', 'R', '3809', 'a', '645', '5107', 'E', '5195', '9867', '8635', '2771', '3393', '9151']
Output (English): M, L, R, 2771