B3311331313231311331322331333131133133313231133133313331311331323132322121311
>>
B331133131323131133132233133313113313331323113313331333131133132313232212131
<<
B3311331313231311331322331333131133133313231133133313331311331323132322121313
>>
B3311331313231311331322331333131133133313231133133313331311331323132322121312
>>