Task: Program Execution
Input (English): 9211, y, 4497, i, z, 4855, 5425, 2553, T, 8113, x, 325, e, z, 4135, D, i, i, 4881, 333, 1637
Output (English): 1, 3, 6, 7, 8, 10, 12, 15, 19, 20, 21