Task: Program Execution
Input (English): 6449 2039 I u c 6443 1827 2123 b 3861 4763 T C X r 6595 5221 9989 1019 1173 2801 j Y 8181 z f Z 347 2297 i 4635 T 1785 I I
Output (English): 3, 4, 5, 9, 12, 13, 14, 15, 22, 23, 25, 26, 27, 30, 32, 34, 35