B331133131323131133132233133313231323112113313113313232233132313232212121   >>    B33113313132313113313223313331323132311211331311331323223313231323221212   <<    B331133131323131133132233133313231323112113313113313232233132313232212123   >>      B331133131323131133132233133313231323112113313113313232233132313232212122   >>