B3311331313231311331322331333131133133313111333133313331323221131211   >>    B331133131323131133132233133313113313331311133313331333132322113121   <<    B3311331313231311331322331333131133133313111333133313331323221131213   >>      B3311331313231311331322331333131133133313111333133313331323221131212   >>