Task: Program Execution
Input (English): j, 6201, 3977, 8249, r, F, 2811, 1135, X, 4763, 1621, 4101, 5757, b, p, M, Z, 603, x, z, 5373, d
Output (English): 1, 5, 6, 9, 14, 15, 16, 17, 19, 20, 22