B3311331313231311331322331333132313232233131311331333132313331323221323222311   >>    B331133131323131133132233133313231323223313131133133313231333132322132322231   <<    B3311331313231311331322331333132313232233131311331333132313331323221323222313   >>      B3311331313231311331322331333132313232233131311331333132313331323221323222312   >>