Task: Program Execution
Input (English): 2159 4559 S l 4017 p O r 6981 h d j L B E L 8637 3149 e I 6475 1695 o T Q 5763 2317 d E z A 879
Output (English): 3, 4, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 19, 20, 23, 24, 25, 28, 29, 30, 31