D12121323331322331313232223132313231333132313223313231311331313231323132322121   >>    D1212132333132233131323222313231323133313231322331323131133131323132313232212   <<    D12121323331322331313232223132313231333132313223313231311331313231323132322123   >>      D12121323331322331313232223132313231333132313223313231311331313231323132322122   >>