B3311331313231311331322331333132313132313331323223313231333132323133313113311   >>    B331133131323131133132233133313231313231333132322331323133313232313331311331   <<    B3311331313231311331322331333132313132313331323223313231333132323133313113313   >>      B3311331313231311331322331333132313132313331323223313231333132323133313113312   >>