B331133131323131133132233133313231323132333133313113313331323213331312121   >>    B33113313132313113313223313331323132313233313331311331333132321333131212   <<    B331133131323131133132233133313231323132333133313113313331323213331312123   >>      B331133131323131133132233133313231323132333133313113313331323213331312122   >>