Task: Program Execution
Input (English): a, 1629, r, k, d, 6159, 1127, z, y, 2847, P, 4019, i, 2751, 4195, 7509, M, z, 1689, 4227, 7647, 7425, 9097, Y
Output (English): 2, 6, 7, 10, 12, 14, 15, 16, 19, 20, 21, 22, 23