D33131132122132313132333132323213231323223313133313233313123232111   >>    D3313113212213231313233313232321323132322331313331323331312323211   <<    D33131132122132313132333132323213231323223313133313233313123232113   >>      D33131132122132313132333132323213231323223313133313233313123232112   >>