C2122121212121133131323331313113313233313231322331311331323133313222111   >>    C212212121212113313132333131311331323331323132233131133132313331322211   <<    C2122121212121133131323331313113313233313231322331311331323133313222113   >>      C2122121212121133131323331313113313233313231322331311331323133313222112   >>