B3311331313231311331322331333131133133313231133133313232233313123231   >>    B331133131323131133132233133313113313331323113313331323223331312323   <<    B3311331313231311331322331333131133133313231133133313232233313123233   >>      B3311331313231311331322331333131133133313231133133313232233313123232   >>