C2122121212121133131323331313113313233313231322331323223313133112111   >>    C212212121212113313132333131311331323331323132233132322331313311211   <<    C2122121212121133131323331313113313233313231322331323223313133112113   >>      C2122121212121133131323331313113313233313231322331323223313133112112   >>