B3311331313231311331322331333132313232233132313133313331311331311331323122311   >>    B331133131323131133132233133313231323223313231313331333131133131133132312231   <<    B3311331313231311331322331333132313232233132313133313331311331311331323122313   >>      B3311331313231311331322331333132313232233132313133313331311331311331323122312   >>