C2122121212121133131323331313113313233313231322331311331323132333132212111   >>    C212212121212113313132333131311331323331323132233131133132313233313221211   <<    C2122121212121133131323331313113313233313231322331311331323132333132212113   >>      C2122121212121133131323331313113313233313231322331311331323132333132212112   >>