D13231123313133313132233132312132313233313233313223313231322112111   >>    D1323112331313331313223313231213231323331323331322331323132211211   <<    D13231123313133313132233132312132313233313233313223313231322112113   >>      D13231123313133313132233132312132313233313233313223313231322112112   >>