D121213233313223313132322231323132313331323132233131323331323311221   >>    D12121323331322331313232223132313231333132313223313132333132331122   <<    D121213233313223313132322231323132313331323132233131323331323311223   >>      D121213233313223313132322231323132313331323132233131323331323311222   >>