B3311331313231311331322331333132313132313331323223313232211233132313233311   >>    B331133131323131133132233133313231313231333132322331323221123313231323331   <<    B3311331313231311331322331333132313132313331323223313232211233132313233313   >>      B3311331313231311331322331333132313132313331323223313232211233132313233312   >>