D12121212121313233313123231323223313132322331323132233132312323132323331   >>    D1212121212131323331312323132322331313232233132313223313231232313232333   <<    D12121212121313233313123231323223313132322331323132233132312323132323333   >>      D12121212121313233313123231323223313132322331323132233132312323132323332   >>