Put the 8 numbers 1, 2, 3, 4, 5, 6, 7 and 8 into the port respectively. Port + port = port + port = port + port = port + port = port + port

Put the 8 numbers 1, 2, 3, 4, 5, 6, 7 and 8 into the port respectively. Port + port = port + port = port + port = port + port = port + port

1 + 8 = 2 + 7 = 3 + 6 = 4 + 5