D12121212121313233313123231323223313132322331323132233132223131   >>    D1212121212131323331312323132322331313232233132313223313222313   <<    D12121212121313233313123231323223313132322331323132233132223133   >>      D12121212121313233313123231323223313132322331323132233132223132   >>