Task: Program Execution
Input (English): O b 4377 U 9825 8949 8939 I 3547 199 9823 7761 8493 8301 i 9501 P Q Z A 4003 R t 6965 z
Output (English): 1, 2, 4, 8, 15, 17, 18, 19, 20, 22, 23, 25