B3311331313231311331322331333131133133313111333133313331323331323132212331   >>    B331133131323131133132233133313113313331311133313331333132333132313221233   <<    B3311331313231311331322331333131133133313111333133313331323331323132212333   >>      B3311331313231311331322331333131133133313111333133313331323331323132212332   >>