Task: Program Execution
Input (English): 4367 8683 D 5085 9775 5371 G 671 8063 j e p z 2035 2721 2373 2729 2731 2657 l 6485 4985 6839 h j G
Output (English): 1, 2, 4, 5, 6, 8, 9, 14, 15, 16, 17, 18, 19, 21, 22, 23