C31231211111133131211113313331333133312111112113313331323223223311   >>    C3123121111113313121111331333133313331211111211331333132322322331   <<    C31231211111133131211113313331333133312111112113313331323223223313   >>      C31231211111133131211113313331333133312111112113313331323223223312   >>