D12121212121313233313123231323223313132322331323132233133313113121121   >>    D1212121212131323331312323132322331313232233132313223313331311312112   <<    D12121212121313233313123231323223313132322331323132233133313113121123   >>      D12121212121313233313123231323223313132322331323132233133313113121122   >>