D12121212121313233313232313231323123231323223313113313233313231   >>    D1212121212131323331323231323132312323132322331311331323331323   <<    D12121212121313233313232313231323123231323223313113313233313233   >>      D12121212121313233313232313231323123231323223313113313233313232   >>