C312312111133131212111133131133133313331311331333132233131121211   >>    C31231211113313121211113313113313331333131133133313223313112121   <<    C312312111133131212111133131133133313331311331333132233131121213   >>      C312312111133131212111133131133133313331311331333132233131121212   >>