C2122121212121133131323331313113313233313231322331323223313221131   >>    C212212121212113313132333131311331323331323132233132322331322113   <<    C2122121212121133131323331313113313233313231322331323223313221133   >>      C2122121212121133131323331313113313233313231322331323223313221132   >>