A, B, C, D, E, F, G and H are sitting in a row facing north. G is second from the left end. At least two persons are sitting between H and E. F is to the right of A, who is not adjacent to H. B, C, D and E are sitting in that order from left to right but no two of them are in adjacent positions. If E and B interchange their positions and then only one of them is sitting at any extreme end, who sits third to the right of D?