B3311331313231311331322331333132313231323331333131123313331323132213232212311   >>    B331133131323131133132233133313231323132333133313112331333132313221323221231   <<    B3311331313231311331322331333132313231323331333131123313331323132213232212313   >>      B3311331313231311331322331333132313231323331333131123313331323132213232212312   >>