B33113313132313113313223313331323133313223313231333133313232223213212121
>>
B3311331313231311331322331333132313331322331323133313331323222321321212
<<
B33113313132313113313223313331323133313223313231333133313232223213212123
>>
B33113313132313113313223313331323133313223313231333133313232223213212122
>>