Task: Program Execution
Input (English): 2159 Z 8311 Y 563 F I 2471 t 9391 J 6007 1375 K a 3833 y 425 O 8981 9535 7859 r 6769 91 3709 8599 p G u 8507 Z 9577
Output (English): 1, 3, 5, 8, 10, 12, 13, 16, 18, 20, 21, 22, 24, 25, 26, 27, 31, 33