Task: Program Execution
Input (English): L B G 2853 9737 4763 u o 8825 e 6797 y u 4601 7715 K 425 Y 8757 Z 7497 E 2807 9033 p b 5723 q z 7641 2527 1523 B 6233 q r 3805 p 4537 3385
Output (English): 1, 2, 3, 7, 8, 10, 12, 13, 16, 18, 20, 22, 25, 26, 28, 29, 33, 35, 36, 38