B3311331313231311331322331333132322331323331133132313232223132322311   >>    B331133131323131133132233133313232233132333113313231323222313232231   <<    B3311331313231311331322331333132322331323331133132313232223132322313   >>      B3311331313231311331322331333132322331323331133132313232223132322312   >>