Task: Program Execution
Input (English): m 9569 5521 z U 7151 9455 r 1343 D 6279 3415 2851 c M 9857 3683 1633 7979 9007 s U R 75 8077 E f
Output (English): 2, 3, 6, 7, 9, 11, 12, 13, 16, 17, 18, 19, 20, 24, 25