Task: Program Execution
Input (English): i 5039 3571 F 6897 s E 2855 5601 r 9709 p k 9547 e 9307 u o k 8437 x U A K s X D o p
Output (English): 1, 4, 6, 7, 10, 12, 13, 15, 17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 28, 29