Task: Program Execution
Input (English): 261 9599 E 6317 B 2857 9345 i U S b x 9765 1599 3741 8415 1275 6511 7831 3503 m M 9261 W d 7669 9635 M 1011 B 5843
Output (English): 1, 2, 4, 6, 7, 13, 14, 15, 16, 17, 18, 19, 20, 23, 26, 27, 29, 31