B3311331313231311331322331333132313132313331323223313231323132322121211
>>
B331133131323131133132233133313231313231333132322331323132313232212121
<<
B3311331313231311331322331333132313132313331323223313231323132322121213
>>
B3311331313231311331322331333132313132313331323223313231323132322121212
>>