C111112111133131121133133313331333121111133313331333133311332233132322121211   >>    C11111211113313112113313331333133312111113331333133313331133223313232212121   <<    C111112111133131121133133313331333121111133313331333133311332233132322121213   >>      C111112111133131121133133313331333121111133313331333133311332233132322121212   >>