Task: Program Execution
Input (English): j, 6453, S, o, 9523, 7019, 1715, o, 6227, F, 9901, d, a, j, 5263, 6665, 6189, M, 3587, o
Output (English): 1, 3, 4, 8, 10, 12, 13, 14, 18, 20