B3311331313231311331322331333131133133313111333133313331322121111113311212231   >>    B331133131323131133132233133313113313331311133313331333132212111111331121223   <<    B3311331313231311331322331333131133133313111333133313331322121111113311212233   >>      B3311331313231311331322331333131133133313111333133313331322121111113311212232   >>