D12121323331322331313232223132313231333132313223313231311331313211   >>    D1212132333132233131323222313231323133313231322331323131133131321   <<    D12121323331322331313232223132313231333132313223313231311331313213   >>      D12121323331322331313232223132313231333132313223313231311331313212   >>