Task: Program Execution
Input (English): 2331, z, a, i, 4867, h, 5977, c, j, j, c, q, u, l, 4839, b, l, 3615, 2187, i, x, r, t, 7071
Output (English): a, b, c, h, i, j, l, q, r, t, u, x, z