B3311331313231311331322331333132313132313331323223313232223132323221   >>    B331133131323131133132233133313231313231333132322331323222313232322   <<    B3311331313231311331322331333132313132313331323223313232223132323223   >>      B3311331313231311331322331333132313132313331323223313232223132323222   >>