B33113313132313113313223313331323133313223313231333133313331333133311222121221   >>    B3311331313231311331322331333132313331322331323133313331333133313331122212122   <<    B33113313132313113313223313331323133313223313231333133313331333133311222121223   >>      B33113313132313113313223313331323133313223313231333133313331333133311222121222   >>