C31231211111133131211113313331333133313331323133313232233131133121   >>    C3123121111113313121111331333133313331333132313331323223313113312   <<    C31231211111133131211113313331333133313331323133313232233131133123   >>      C31231211111133131211113313331333133313331323133313232233131133122   >>