Task: Program Execution
Input (English): 4533, 523, 325, 2805, 8561, 3831, H, X, 1417, 8845, 2453, X, 9903, 4411, 9693, W, x, 659, W, f, 1745, I, 323
Output (English): H, X, X, W, x, W, f, I