Task: Program Execution
Input (English): 5141, 8567, k, k, f, 8019, m, 2029, 6507, 1927, z, z, 7073, z, 1191, 9257, y, y, w, b, 7179, j, j, 4861
Output (English): b, f, j, k, m, w, y, z