D12121212121313233313123231323223313132322331323132233133313231123321   >>    D1212121212131323331312323132322331313232233132313223313331323112332   <<    D12121212121313233313123231323223313132322331323132233133313231123323   >>      D12121212121313233313123231323223313132322331323132233133313231123322   >>