C3123121111331312121111331311331333133313232233132313113313231322132213111   >>    C312312111133131212111133131133133313331323223313231311331323132213221311   <<    C3123121111331312121111331311331333133313232233132313113313231322132213113   >>      C3123121111331312121111331311331333133313232233132313113313231322132213112   >>