D12121212121313233313123231323223313132322331323132233131323123111   >>    D1212121212131323331312323132322331313232233132313223313132312311   <<    D12121212121313233313123231323223313132322331323132233131323123113   >>      D12121212121313233313123231323223313132322331323132233131323123112   >>