B33113313132313113313223313331323133313223313231333133311221123121111331212121   >>    B3311331313231311331322331333132313331322331323133313331122112312111133121212   <<    B33113313132313113313223313331323133313223313231333133311221123121111331212123   >>      B33113313132313113313223313331323133313223313231333133311221123121111331212122   >>