B33113313132313113313223313331323133313223313231333133313331212111111212121   >>    B3311331313231311331322331333132313331322331323133313331333121211111121212   <<    B33113313132313113313223313331323133313223313231333133313331212111111212123   >>      B33113313132313113313223313331323133313223313231333133313331212111111212122   >>