B33113313132313113313223313331323133313223313231333133313311232333133313222121
>>
B3311331313231311331322331333132313331322331323133313331331123233313331322212
<<
B33113313132313113313223313331323133313223313231333133313311232333133313222123
>>
B33113313132313113313223313331323133313223313231333133313311232333133313222122
>>