Task: Program Execution
Input (English): 9099 J 8555 7515 X L Y 723 3653 F X 8639 j 1447 S f e h e E K V r B k
Output (English): 2, 5, 6, 7, 10, 11, 13, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25