Task: Program Execution
Input (English): 6859 4811 6909 6315 9453 X 3717 3415 Q D 1823 t Y U 9839 B k g 2503 91 f 155 1213 5885 4299 1869 d 621 U
Output (English): 6, 9, 10, 12, 13, 14, 16, 17, 18, 21, 27, 29