D121213233313133313123132313231323132233132333132213331313232311   >>    D12121323331313331312313231323132313223313233313221333131323231   <<    D121213233313133313123132313231323132233132333132213331313232313   >>      D121213233313133313123132313231323132233132333132213331313232312   >>