C3123121111331312121111331311331333133313232233132313113313231221   >>    C312312111133131212111133131133133313331323223313231311331323122   <<    C3123121111331312121111331311331333133313232233132313113313231223   >>      C3123121111331312121111331311331333133313232233132313113313231222   >>