C2122121212121133131323331313113313233313231322331323132313233313221211   >>    C212212121212113313132333131311331323331323132233132313231323331322121   <<    C2122121212121133131323331313113313233313231322331323132313233313221213   >>      C2122121212121133131323331313113313233313231322331323132313233313221212   >>