Task: Program Execution
Input (English): 4, ['1843', '4491', '5775', 'S', 'p', 'u', '8545', '5431', '5223', 'X', '2909', 'S', '2431']
Output (English): 1843, 4491, 5775, S, p, u, 8545, 5431, 5223