D12121212121313233313123231323223313132322331323132233133313123232231   >>    D1212121212131323331312323132322331313232233132313223313331312323223   <<    D12121212121313233313123231323223313132322331323132233133313123232233   >>      D12121212121313233313123231323223313132322331323132233133313123232232   >>