D12121323331322331313232223132313231333132313223313231311331323222123231   >>    D1212132333132233131323222313231323133313231322331323131133132322212323   <<    D12121323331322331313232223132313231333132313223313231311331323222123233   >>      D12121323331322331313232223132313231333132313223313231311331323222123232   >>