Task: Program Execution
Input (English): 6171 E x 4921 n 4837 4871 9711 q 3307 9997 B 5113 W 7907 8369 Q u 8845 M 6441 8197 o M 5963 7667 U I
Output (English): 1, 4, 6, 7, 8, 10, 11, 13, 15, 16, 19, 21, 22, 25, 26