B3311331313231311331322331333131133132313133313232233131333132313232222131   >>    B331133131323131133132233133313113313231313331323223313133313231323222213   <<    B3311331313231311331322331333131133132313133313232233131333132313232222133   >>      B3311331313231311331322331333131133132313133313232233131333132313232222132   >>