D12121323331322331313232223132313231311221123223313233313123231221   >>    D1212132333132233131323222313231323131122112322331323331312323122   <<    D12121323331322331313232223132313231311221123223313233313123231223   >>      D12121323331322331313232223132313231311221123223313233313123231222   >>