B3311331313231311331322331333131133133313111333133313231323223313232213232311   >>    B331133131323131133132233133313113313331311133313331323132322331323221323231   <<    B3311331313231311331322331333131133133313111333133313231323223313232213232313   >>      B3311331313231311331322331333131133133313111333133313231323223313232213232312   >>