D12121212121313233313232313231323123231323223313113313232313131   >>    D1212121212131323331323231323132312323132322331311331323231313   <<    D12121212121313233313232313231323123231323223313113313232313133   >>      D12121212121313233313232313231323123231323223313113313232313132   >>