B3311331313231311331322331333132313231333131323223313331313232212311   >>    B331133131323131133132233133313231323133313132322331333131323221231   <<    B3311331313231311331322331333132313231333131323223313331313232212313   >>      B3311331313231311331322331333132313231333131323223313331313232212312   >>