Task: Program Execution
Input (English): 3701, 2469, F, 3597, l, 9949, 5449, 7721, b, f, 2237, 2957, 9893, 6941, m, M, v, 2655, 6297, 8837, s, f, 9777
Output (English): 3, 5, 9, 10, 15, 16, 17, 21, 22