Task: Program Execution
Input (English): q, E, M, e, 1875, 2967, 9117, X, a, O, 909, D, p, z, G, 6991, x, 4789, r
Output (English): 1, 2, 3, 4, 8, 9, 10, 12, 13, 14, 15, 17, 19