D12121323331322331313232223132313232213231323223313133313231311211   >>    D1212132333132233131323222313231323221323132322331313331323131121   <<    D12121323331322331313232223132313232213231323223313133313231311213   >>      D12121323331322331313232223132313232213231323223313133313231311212   >>