C3213322333133313113313221211113313331333133313231131131233331121212121   >>    C321332233313331311331322121111331333133313331323113113123333112121212   <<    C3213322333133313113313221211113313331333133313231131131233331121212123   >>      C3213322333133313113313221211113313331333133313231131131233331121212122   >>