Task: Program Execution
Input (English): O, 2943, u, 4061, 6405, i, 4575, a, 2321, M, s, 8431, 7345, 1597, 9821, R, E, 3877, g, 6593
Output (English): 2, 4, 5, 7, 9, 12, 13, 14, 15, 18, 20