D13231123313133313132233132312132313233313233313223313232223132333131   >>    D1323112331313331313223313231213231323331323331322331323222313233313   <<    D13231123313133313132233132312132313233313233313223313232223132333133   >>      D13231123313133313132233132312132313233313233313223313232223132333132   >>