Task: Program Execution
Input (English): 423 U 4631 Y L 5635 e Z 1505 9927 4417 p n y Q W E U 4063 9673 5013 q W 8427 I S
Output (English): 2, 4, 5, 7, 8, 12, 13, 14, 15, 16, 17, 18, 22, 23, 25, 26