B3311331313231311331322331333132313231323331333131133133313223311321   >>    B331133131323131133132233133313231323132333133313113313331322331132   <<    B3311331313231311331322331333132313231323331333131133133313223311323   >>      B3311331313231311331322331333132313231323331333131133133313223311322   >>