B3311331313231311331322331333132313132313331323223313232211312122311   >>    B331133131323131133132233133313231313231333132322331323221131212231   <<    B3311331313231311331322331333132313132313331323223313232211312122313   >>      B3311331313231311331322331333132313132313331323223313232211312122312   >>