B3311331313231311331322331333132333131323132333133313331323331323233311   >>    B331133131323131133132233133313233313132313233313331333132333132323331   <<    B3311331313231311331322331333132333131323132333133313331323331323233313   >>      B3311331313231311331322331333132333131323132333133313331323331323233312   >>