Task: Program Execution
Input (English): 4, 8, ['W', 'g', '7413', 'x', 'm', 'l', '5927', '45', 'M', '8435', 'X', 'R', 'z', '3277', '8715', 'M', '2547', 'R', '799', 'S', '1373', 'd']
Output (English): x, R, S