D121212121213132333131232313232233131323223313232233131133133313112121   >>    D12121212121313233313123231323223313132322331323223313113313331311212   <<    D121212121213132333131232313232233131323223313232233131133133313112123   >>      D121212121213132333131232313232233131323223313232233131133133313112122   >>