D1212121212131323223313233231323331313232213231333132313111121131   >>    D121212121213132322331323323132333131323221323133313231311112113   <<    D1212121212131323223313233231323331313232213231333132313111121133   >>      D1212121212131323223313233231323331313232213231333132313111121132   >>