Task: Program Execution
Input (English): 4, ['C', '649', 'L', 'o', '4221', 'M', '2879', '3049', 'O', 'x', 'K', '3975', '5211', '5311', '2705', 'Y', '1037', 'j', 'O']
Output (English): C, 4221, O, 5211, 1037