Task: Program Execution
Input (English): A, 2267, 8245, 7401, Z, f, 8889, 3275, 1343, 8597, 4829, 9147, 2123, Z, E, X, Z, W, x, m, 5083, C
Output (English): 2, 3, 4, 7, 8, 9, 10, 11, 12, 13, 21