B3311331313231311331322331333131133133313111333133313331322113121   >>    B331133131323131133132233133313113313331311133313331333132211312   <<    B3311331313231311331322331333131133133313111333133313331322113123   >>      B3311331313231311331322331333131133133313111333133313331322113122   >>