C312312111111331312111133133313331333121111331333133313331333132211211221   >>    C31231211111133131211113313331333133312111133133313331333133313221121122   <<    C312312111111331312111133133313331333121111331333133313331333132211211223   >>      C312312111111331312111133133313331333121111331333133313331333132211211222   >>