D13231123313133313132233132312132313233313233313223313231112311   >>    D1323112331313331313223313231213231323331323331322331323111231   <<    D13231123313133313132233132312132313233313233313223313231112313   >>      D13231123313133313132233132312132313233313233313223313231112312   >>