B3311331313231311331322331333132313331323131323223313223313123233311   >>    B331133131323131133132233133313231333132313132322331322331312323331   <<    B3311331313231311331322331333132313331323131323223313223313123233313   >>      B3311331313231311331322331333132313331323131323223313223313123233312   >>