C312312111133131212111133133313331333133112113313331333113223311   >>    C31231211113313121211113313331333133313311211331333133311322331   <<    C312312111133131212111133133313331333133112113313331333113223313   >>      C312312111133131212111133133313331333133112113313331333113223312   >>