Task: Program Execution
Input (English): 4, ['4661', '3157', 'F', 'X', '331', '7007', 'p', '8655', '5643', 'U', '4869', 'D', '2073', '5099', '2797', 'M', '8651', '743', '3375', 'C', 'W']
Output (English): 4661, 331, 5643, 2073, 8651, W