Task: Program Execution
Input (English): 6321 a 8017 v 1397 x 8779 6637 l x 2277 1219 995 6885 J 651 9673 N Q 8573 5757 c C h 9101 6389 P A b 4089 7201 1871 T s 9687 g k 5673 8663
Output (English): 1, 3, 5, 7, 8, 11, 12, 13, 14, 16, 17, 20, 21, 25, 26, 30, 31, 32, 35, 38, 39