C1111233131211111211113313331333133313331333133313331333121111331323321311   >>    C111123313121111121111331333133313331333133313331333133312111133132332131   <<    C1111233131211111211113313331333133313331333133313331333121111331323321313   >>      C1111233131211111211113313331333133313331333133313331333121111331323321312   >>