D12121212121313233313232313231323123231323223313113313132322131   >>    D1212121212131323331323231323132312323132322331311331313232213   <<    D12121212121313233313232313231323123231323223313113313132322133   >>      D12121212121313233313232313231323123231323223313113313132322132   >>