B33113313132313113313223313331323133313223313231333133313133313232213231312121
>>
B3311331313231311331322331333132313331322331323133313331313331323221323131212
<<
B33113313132313113313223313331323133313223313231333133313133313232213231312123
>>
B33113313132313113313223313331323133313223313231333133313133313232213231312122
>>