B3311331313231311331322331333132323133313223313231323133313232223131   >>    B331133131323131133132233133313232313331322331323132313331323222313   <<    B3311331313231311331322331333132323133313223313231323133313232223133   >>      B3311331313231311331322331333132323133313223313231323133313232223132   >>