D13231123313133313223313132233131323221323132313132333132313233313232221   >>    D1323112331313331322331313223313132322132313231313233313231323331323222   <<    D13231123313133313223313132233131323221323132313132333132313233313232223   >>      D13231123313133313223313132233131323221323132313132333132313233313232222   >>