InverseFizzBuzz

    var result =
        (from start in Enumerable.Range(1, 15)
            let fizzBuzzSeq =
                (from i in Enumerable.Range(start, int.MaxValue - start)
                let fizzBuzz =
                    i % 15 == 0 ? new { fizzbuzz = "fizzbuzz", index = i }
                        : i % 3 == 0 ? new { fizzbuzz = "fizz", index = i }
                        : i % 5 == 0 ? new { fizzbuzz = "buzz", index = i }
                        : null
                where fizzBuzz != null
                select fizzBuzz).Take(inputList.Length)
            where fizzBuzzSeq.Select(f => f.fizzbuzz).SequenceEqual(inputList)
            select new {
                StartRange = fizzBuzzSeq.Select(f => f.index).First(),
                EndRange = fizzBuzzSeq.Select(f => f.index).Last()
            }).Aggregate((a, b) => (a.EndRange - a.StartRange) < (b.EndRange - b.StartRange) ? a : b);