D12121323331322331313232223132313231323133313223313233313123221   >>    D1212132333132233131323222313231323132313331322331323331312322   <<    D12121323331322331313232223132313231323133313223313233313123223   >>      D12121323331322331313232223132313231323133313223313233313123222   >>