B3311331313231311331322331333131133133313111333133313331323233123121   >>    B331133131323131133132233133313113313331311133313331333132323312312   <<    B3311331313231311331322331333131133133313111333133313331323233123123   >>      B3311331313231311331322331333131133133313111333133313331323233123122   >>