Task: Program Execution
Input (English): A 6847 o X y 2093 2883 D 21 r Q c 367 Z e V 1765 695 w 447 3557 U e x 7707 9781 6533 z 2441
Output (English): 2, 6, 7, 9, 13, 17, 18, 20, 21, 25, 26, 27, 29