B3311331313231311331322331333132313232233132322223313231323132313132323331   >>    B331133131323131133132233133313231323223313232222331323132313231313232333   <<    B3311331313231311331322331333132313232233132322223313231323132313132323333   >>      B3311331313231311331322331333132313232233132322223313231323132313132323332   >>