C1111233131211111211113313331333133313331333133313331333133313221213331211   >>    C111123313121111121111331333133313331333133313331333133313331322121333121   <<    C1111233131211111211113313331333133313331333133313331333133313221213331213   >>      C1111233131211111211113313331333133313331333133313331333133313221213331212   >>