B3311331313231311331322331333131133133313111333133313331323233121211   >>    B331133131323131133132233133313113313331311133313331333132323312121   <<    B3311331313231311331322331333131133133313111333133313331323233121213   >>      B3311331313231311331322331333131133133313111333133313331323233121212   >>