B3311331313231311331322331333131133133313232213332313331323132313231323223311   >>    B331133131323131133132233133313113313331323221333231333132313231323132322331   <<    B3311331313231311331322331333131133133313232213332313331323132313231323223313   >>      B3311331313231311331322331333131133133313232213332313331323132313231323223312   >>