B3311331313231311331322331333131133133313111333133313331323113313123231211
>>
B331133131323131133132233133313113313331311133313331333132311331312323121
<<
B3311331313231311331322331333131133133313111333133313331323113313123231213
>>
B3311331313231311331322331333131133133313111333133313331323113313123231212
>>