D12121212121313233313232313231323123231323223313113313232233131323132311   >>    D1212121212131323331323231323132312323132322331311331323223313132313231   <<    D12121212121313233313232313231323123231323223313113313232233131323132313   >>      D12121212121313233313232313231323123231323223313113313232233131323132312   >>