Task: Program Execution
Input (English): 2083 4059 4971 z 4811 8365 A k 8071 D 3033 7981 g C 8577 2509 6869 6059 6645 4957 9693 645 7045 4715 7083 G
Output (English): 1, 2, 3, 5, 6, 9, 11, 12, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25