C312312111111331312111133133313331211111333133313331333133313331333132332131   >>    C31231211111133131211113313331333121111133313331333133313331333133313233213   <<    C312312111111331312111133133313331211111333133313331333133313331333132332133   >>      C312312111111331312111133133313331211111333133313331333133313331333132332132   >>