D12121212121313233313123231323223313132322331323132233131323132333111   >>    D1212121212131323331312323132322331313232233132313223313132313233311   <<    D12121212121313233313123231323223313132322331323132233131323132333113   >>      D12121212121313233313123231323223313132322331323132233131323132333112   >>