D12121323331322331313232223132313231323133313223313231323212311   >>    D1212132333132233131323222313231323132313331322331323132321231   <<    D12121323331322331313232223132313231323133313223313231323212313   >>      D12121323331322331313232223132313231323133313223313231323212312   >>