B33113313132313113313223313331323231323131133132313231333132313232211331
>>
B3311331313231311331322331333132323132313113313231323133313231323221133
<<
B33113313132313113313223313331323231323131133132313231333132313232211333
>>
B33113313132313113313223313331323231323131133132313231333132313232211332
>>