B33113313132313113313223313331323133313223313231333133313231231211111122223131   >>    B3311331313231311331322331333132313331322331323133313331323123121111112222313   <<    B33113313132313113313223313331323133313223313231333133313231231211111122223133   >>      B33113313132313113313223313331323133313223313231333133313231231211111122223132   >>