D12121323331322331313232223132313231323133313223313231323221213131   >>    D1212132333132233131323222313231323132313331322331323132322121313   <<    D12121323331322331313232223132313231323133313223313231323221213133   >>      D12121323331322331313232223132313231323133313223313231323221213132   >>