C2122121212121133131323331313113313233313231322331323223313231312111   >>    C212212121212113313132333131311331323331323132233132322331323131211   <<    C2122121212121133131323331313113313233313231322331323223313231312113   >>      C2122121212121133131323331313113313233313231322331323223313231312112   >>