public void ExampleA1()
        {
            var generator = new Day14.KeyGenerator("abc");

            generator.GenerateKeys();
            Assert.AreNotEqual(18, generator.IndexForKeyIndex(0));
        }
        public void ExampleA4()
        {
            var generator = new Day14.KeyGenerator("abc");

            generator.GenerateKeys();
            Assert.AreEqual(22728, generator.IndexForKeyIndex(63));
        }