C111123313121111121111331333133313331333112221211111333133323133313223331211   >>    C11112331312111112111133133313331333133311222121111133313332313331322333121   <<    C111123313121111121111331333133313331333112221211111333133323133313223331213   >>      C111123313121111121111331333133313331333112221211111333133323133313223331212   >>