B33113313132313113313223313331323133313223313231333133313231313331313132212121
>>
B3311331313231311331322331333132313331322331323133313331323131333131313221212
<<
B33113313132313113313223313331323133313223313231333133313231313331313132212123
>>
B33113313132313113313223313331323133313223313231333133313231313331313132212122
>>