Task: Program Execution
Input (English): 6717 I 6201 9763 1003 6931 9435 a 3537 A 4509 4787 2219 4555 o g K 8823 7043 579 X U 5411 9763 n 8243 b G 1723 Q 319 T
Output (English): 1, 3, 4, 5, 6, 7, 9, 11, 12, 13, 14, 18, 19, 20, 23, 24, 26, 29, 31