Task: Program Execution
Input (English): 13, ['5143', 'N', '957', 'n', '4603', 'g', '1589', 'T', '5597', '3213', '9163', '4263', '5677', '9729', '551', '7849', '7579', '5093', 'D', 'f', 'r', 'm', '6491', '8863', 'N', 'N', 'c', '4337', 'X', 'O', '7975', '451']
Output (English): 5143, 9729, c