B3311331313231311331322331333131211111211113313231323133313123232311
>>
B331133131323131133132233133313121111121111331323132313331312323231
<<
B3311331313231311331322331333131211111211113313231323133313123232313
>>
B3311331313231311331322331333131211111211113313231323133313123232312
>>