Task: Program Execution
Input (English): 7, ['2761', '4269', '8889', 'N', 'U', 'E', '3527', '4171', '4321', '1225', 'u', '7991', '7439', 'p', 'r']
Output (English): 4171, 4321, 1225, u, 7991, 7439, p, r