So if we make the two types of rotations, a two full rotation, then at the end we will produce that same molecule. So to see what we mean, let's actually conduct our rotation. So we make the cleavage. So what we get is one fragment contains the five prime N in black with the G and the three prime N. So Cttaa and then the other end contains the three prime Aattc and the five prime in purple given by G. So if we make the first rotation by 180 degrees along the y axis. So we basically flip it this way. These two will end up on this side and these two will end up on this side.