B3311331313231311331322331333131133133313232233312133313232223131   >>    B331133131323131133132233133313113313331323223331213331323222313   <<    B3311331313231311331322331333131133133313232233312133313232223133   >>      B3311331313231311331322331333131133133313232233312133313232223132   >>