Task: Program Execution
Input (English): 3113, 3311, 1759, x, m, 5335, 6325, u, n, 6441, 9931, 9219, y, 7647, 8241, r, 2681, 9827, f, y, f, z, p
Output (English): f, m, n, p, r, u, x, y, z