B33113313132313113313223313331323133313223313231333133313232212121223131   >>    B3311331313231311331322331333132313331322331323133313331323221212122313   <<    B33113313132313113313223313331323133313223313231333133313232212121223133   >>      B33113313132313113313223313331323133313223313231333133313232212121223132   >>