B331133131323131133132233133313231323132333133313113313232233131131212121   >>    B33113313132313113313223313331323132313233313331311331323223313113121212   <<    B331133131323131133132233133313231323132333133313113313232233131131212123   >>      B331133131323131133132233133313231323132333133313113313232233131131212122   >>