B33113313132313113313223313331323133313221211331333133313331323221322121
>>
B3311331313231311331322331333132313331322121133133313331333132322132212
<<
B33113313132313113313223313331323133313221211331333133313331323221322123
>>
B33113313132313113313223313331323133313221211331333133313331323221322122
>>