Task: Program Execution
Input (English): z, 6657, 7591, 7637, b, 4571, 4057, q, j, y, w, 3971, 2431, n, 489, m, n, k, s, w, b, j, f, h
Output (English): b, f, h, j, k, m, n, q, s, w, y, z